<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0185-2574</journal-id>
<journal-title><![CDATA[Estudios de cultura maya]]></journal-title>
<abbrev-journal-title><![CDATA[Estud. cult. maya]]></abbrev-journal-title>
<issn>0185-2574</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Investigaciones Filológicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-25742018000100111</article-id>
<article-id pub-id-type="doi">10.19130/iifl.ecm.2018.51.876</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Impact of Human Waste Management on the estimation of Ancient Maya Population]]></article-title>
<article-title xml:lang="es"><![CDATA[Impacto del manejo de residuos humanos en la estimación de la antigua población maya]]></article-title>
<article-title xml:lang="fr"><![CDATA[Impact du traitement des déchets humains dans l'estimation de la population maya precolombienne]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[Alfred]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Friends of Aboriginal Health  ]]></institution>
<addr-line><![CDATA[Vancouver ]]></addr-line>
<country>Canada</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<volume>51</volume>
<fpage>111</fpage>
<lpage>128</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-25742018000100111&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-25742018000100111&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-25742018000100111&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The population of ancient Maya has been estimated traditionally by multiplying the number of discovered household mounds and the assumed number of persons per household in a given transect of an archaeological site. This approach is foundationally weak as both key parameters are subject to wide variations over the time course of several centuries. The ubiquitous outcome of this approach is that ancient Maya is nearly always construed to have a very large population base, especially during the Classic period. What is largely omitted in prior studies is the proof of sustainability of such calculated population size in commensuration with, among other things, effective management of human wastes. The waste disposal situation in ancient Tikal is aggravated by the generally flat terrain and the lack of natural drainage channels. The only means of waste disposal would have been by manual labourers conveying the wastes collected daily to dump in cesspools at some distance from high-density human settlements. There was a notable absence of draft animals and wheeled machines including transport vehicles, which could have facilitated such means of waste disposal. The problematic issue of human waste management would certainly have limited the practical size of population cluster in ancient Tikal.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La población de los antiguos mayas tradicionalmente se ha estimado multiplicando el número de montículos residenciales descubiertos por el número asumido de personas por hogar en un transecto dado de un sitio arqueológico. Este enfoque es fundamentalmente débil ya que ambos parámetros clave están sujetos a grandes variaciones a lo largo del tiempo por varios siglos. El resultado omnipresente de este enfoque es que los antiguos mayas son casi siempre interpretados con una gran base poblacional, especialmente durante el período Clásico. Lo que se omite en estudios previos es la demostración de la sostenibilidad de dicho cálculo teniendo en cuenta, entre otras cosas, el manejo efectivo de los desechos humanos. La eliminación de residuos en la antigua Tikal se agravó por el terreno generalmente llano y la falta de canales naturales de drenaje. Los únicos medios de eliminación de desechos habrían sido mediante trasporte a pie de trabajadores manuales, que trasladarían los desechos recolectados diariamente para verterlos en fosas sépticas a cierta distancia de los asentamientos humanos altamente poblados. Hubo una notable ausencia de animales de tiro y vehículos con ruedas, incluidos los medios de transporte, que podrían haber facilitado tales vías de eliminación. La problemática del manejo de los residuos humanos ciertamente habría limitado el tamaño práctico de los grupos de población en la antigua Tikal.]]></p></abstract>
<abstract abstract-type="short" xml:lang="fr"><p><![CDATA[Resume: La population des anciens Mayas est traditionnellement estimée en multipliant le nombre de monticules résidentiels découverts par le nombre supposé de personnes par foyer dans un transect donné d'un site archéologique. Cette approche est fondamentalement faible puisque les deux paramètres clefs sont sujets à de grandes variations au cours des siècles. Les résultats d&#8217;un tel mode de calcul conduit systématiquement à une estimation de la population des anciens Mayas très élevée, en particulier pendant la période Classique. Ce qui est largement omis dans les études antérieures, c&#8217;est la démonstration de la viabilité d&#8217;une telle population, surtout quand celle-ci est confrontée à des paramètres tels que le traitement effectif des déchets humains, par exemple. A Tikal, ce problème d&#8217;élimination des déchets représente un défi particulièrement difficile si l&#8217;on y considère l&#8217;absence de relief et de canaux naturels de drainage. L&#8217;unique moyen de se débarrasser de ces déchets aurait été le recours à une main-d&#8217;&#339;uvre chargée du transport quotidien et manuel ainsi que de l&#8217;enfouissement de ces détritus dans des dépotoirs situés à une certaine distance de cette zone très fortement peuplée. De plus, rappelons qu&#8217;aucun animal de trait ou machine à roues n&#8217;étaient utilisés à cette époque, ce qui auraient pu faciliter cette tâche. La problématique du traitement des déchets humains aurait sans doute limité la taille pratique des groupes de population dans l&#8217;ancienne cité de Tikal.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Maya]]></kwd>
<kwd lng="en"><![CDATA[Tikal]]></kwd>
<kwd lng="en"><![CDATA[population]]></kwd>
<kwd lng="en"><![CDATA[sewage]]></kwd>
<kwd lng="en"><![CDATA[waste management]]></kwd>
<kwd lng="es"><![CDATA[Maya]]></kwd>
<kwd lng="es"><![CDATA[Tikal]]></kwd>
<kwd lng="es"><![CDATA[población]]></kwd>
<kwd lng="es"><![CDATA[aguas residuales]]></kwd>
<kwd lng="es"><![CDATA[manejo de desechos]]></kwd>
<kwd lng="fr"><![CDATA[Maya]]></kwd>
<kwd lng="fr"><![CDATA[Tikal]]></kwd>
<kwd lng="fr"><![CDATA[population]]></kwd>
<kwd lng="fr"><![CDATA[eaux usées]]></kwd>
<kwd lng="fr"><![CDATA[traitement de déchets]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Acuna-Soto]]></surname>
<given-names><![CDATA[Rodolfo]]></given-names>
</name>
<name>
<surname><![CDATA[Stahle]]></surname>
<given-names><![CDATA[David W.]]></given-names>
</name>
<name>
<surname><![CDATA[Cleaveland]]></surname>
<given-names><![CDATA[Malcolm K.]]></given-names>
</name>
<name>
<surname><![CDATA[Therrell]]></surname>
<given-names><![CDATA[Mathhew D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Megadrought and Megadeath in 16th Century Mexico]]></article-title>
<source><![CDATA[Emerging Infectious Diseases]]></source>
<year>2002</year>
<volume>8</volume>
<page-range>360-2</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Acuna-Soto]]></surname>
<given-names><![CDATA[Rodolfo]]></given-names>
</name>
<name>
<surname><![CDATA[Stahle]]></surname>
<given-names><![CDATA[David W.]]></given-names>
</name>
<name>
<surname><![CDATA[Therrell]]></surname>
<given-names><![CDATA[Matthew D.]]></given-names>
</name>
<name>
<surname><![CDATA[Griffin]]></surname>
<given-names><![CDATA[Richard D.]]></given-names>
</name>
<name>
<surname><![CDATA[Cleaveland]]></surname>
<given-names><![CDATA[Malcom K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[When Half of the Population Died: the Epidemic of Hemorrhagic Fevers of 1576 in Mexico]]></article-title>
<source><![CDATA[FEMS Microbiology Letters]]></source>
<year>2004</year>
<volume>240</volume>
<page-range>1-5</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Acuna-Soto]]></surname>
<given-names><![CDATA[Rodolfo]]></given-names>
</name>
<name>
<surname><![CDATA[Stahle]]></surname>
<given-names><![CDATA[David W.]]></given-names>
</name>
<name>
<surname><![CDATA[Therrell]]></surname>
<given-names><![CDATA[Matthew D.]]></given-names>
</name>
<name>
<surname><![CDATA[Gomez Chavez]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<name>
<surname><![CDATA[Cleaveland]]></surname>
<given-names><![CDATA[Malcolm K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Drought, Epidemic Disease, and the Fall of Classic Period Cultures in Mesoamerica (AD 75-950). Hemorrhagic Fevers as a Cause of Massive Population Loss]]></article-title>
<source><![CDATA[Medical Hypotheses]]></source>
<year>2005</year>
<volume>65</volume>
<page-range>405-9</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Acuna-Soto]]></surname>
<given-names><![CDATA[Rodolfo]]></given-names>
</name>
<name>
<surname><![CDATA[Calderón Romero]]></surname>
<given-names><![CDATA[Leticia]]></given-names>
</name>
<name>
<surname><![CDATA[Maguire]]></surname>
<given-names><![CDATA[James H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Large Epidemics of Hemorrhagic Fevers in Mexico 1545-1815]]></article-title>
<source><![CDATA[American Journal of Tropical Medicine and Hygiene]]></source>
<year>2000</year>
<volume>62</volume>
<page-range>733-9</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aldrete]]></surname>
<given-names><![CDATA[Gregory S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Daily Life in the Roman City: Rome, Pompeii, and Ostia]]></source>
<year>2004</year>
<publisher-loc><![CDATA[Westport, CT ]]></publisher-loc>
<publisher-name><![CDATA[Greenwood Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Amulree]]></surname>
<given-names><![CDATA[Lord]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hygienic Conditions in Ancient Rome and Modern London]]></article-title>
<source><![CDATA[Medical History]]></source>
<year>1973</year>
<volume>17</volume>
<page-range>244-55</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Araújo]]></surname>
<given-names><![CDATA[Adauto]]></given-names>
</name>
<name>
<surname><![CDATA[Reinhard]]></surname>
<given-names><![CDATA[Karl J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Luiz Fernando]]></given-names>
</name>
<name>
<surname><![CDATA[Gardner]]></surname>
<given-names><![CDATA[Scott L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Parasites as Probes for Prehistoric Human Migrations?]]></article-title>
<source><![CDATA[Trends in Parasitology]]></source>
<year>2008</year>
<volume>24</volume>
<page-range>112-5</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Araújo]]></surname>
<given-names><![CDATA[Adauto]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Luiz Fernando]]></given-names>
</name>
<name>
<surname><![CDATA[Confalonieri]]></surname>
<given-names><![CDATA[Ulisses]]></given-names>
</name>
<name>
<surname><![CDATA[Chame]]></surname>
<given-names><![CDATA[Marcia]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hookworms and the Peopling of America]]></article-title>
<source><![CDATA[Cadernos de Saúde Pública]]></source>
<year>1988</year>
<volume>2</volume>
<page-range>226-33</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barnhart]]></surname>
<given-names><![CDATA[Edwin L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Urbanism at Palenque]]></article-title>
<source><![CDATA[The PARI (Pre-Columbian Art Research Institute) Journal]]></source>
<year>2002</year>
<volume>4</volume>
<page-range>10-6</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Beard]]></surname>
<given-names><![CDATA[Mary]]></given-names>
</name>
</person-group>
<source><![CDATA[The Fires of Vesuvius: Pompeii Lost and Found]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Cambridge, MA ]]></publisher-loc>
<publisher-name><![CDATA[The Belknap Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bevan]]></surname>
<given-names><![CDATA[Andrew]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mediterranean Containerization]]></article-title>
<source><![CDATA[Current Anthropology]]></source>
<year>2014</year>
<volume>55</volume>
<page-range>387-418</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carr]]></surname>
<given-names><![CDATA[Christopher]]></given-names>
</name>
</person-group>
<source><![CDATA[Tikal Report 11: Georeferenced Map -&#8220;Ruins of Tikal&#8221;]]></source>
<year>2013</year>
<publisher-loc><![CDATA[Philadelphia ]]></publisher-loc>
<publisher-name><![CDATA[University of Pennsylvania Museum of Archaeology and Anthropology]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Casson]]></surname>
<given-names><![CDATA[Lionel]]></given-names>
</name>
</person-group>
<source><![CDATA[Everyday Life in Ancient Rome]]></source>
<year>1998</year>
<publisher-loc><![CDATA[Baltimore ]]></publisher-loc>
<publisher-name><![CDATA[The Johns Hopkins University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chase]]></surname>
<given-names><![CDATA[Adrian S. Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Districting and Urban Services at Caracol, Belize: Intra-Site Boundaries in an Evolving Maya Landscape]]></article-title>
<source><![CDATA[Research Reports in Belizean Archaeology]]></source>
<year>2016</year>
<volume>13</volume>
<page-range>15-28</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chase]]></surname>
<given-names><![CDATA[Arlen F.]]></given-names>
</name>
<name>
<surname><![CDATA[Chase]]></surname>
<given-names><![CDATA[Diane Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ancient Maya Houses, Households, and Residential Groups at Caracol, Belize]]></article-title>
<source><![CDATA[Research Reports in Belizean Archaeology]]></source>
<year>2014</year>
<volume>11</volume>
<page-range>3-17</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chase]]></surname>
<given-names><![CDATA[Arlen F.]]></given-names>
</name>
<name>
<surname><![CDATA[Chase]]></surname>
<given-names><![CDATA[Diane Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Weishampel]]></surname>
<given-names><![CDATA[John F.]]></given-names>
</name>
<name>
<surname><![CDATA[Drake]]></surname>
<given-names><![CDATA[Jason B.]]></given-names>
</name>
<name>
<surname><![CDATA[Shrestha]]></surname>
<given-names><![CDATA[Ramesh L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Airborne LiDAR Archaeology, and the Ancient Maya Landscape at Caracol, Belize]]></article-title>
<source><![CDATA[Journal of Archaeological Science]]></source>
<year>2011</year>
<volume>38</volume>
<page-range>387-98</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ciampitti]]></surname>
<given-names><![CDATA[Ignacio A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vyn]]></surname>
<given-names><![CDATA[Tony J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nitrogen Use Efficiency for Old Versus Modern Corn Hybrids]]></article-title>
<source><![CDATA[Better Crops]]></source>
<year>2014</year>
<volume>98</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>10-21</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cowgill]]></surname>
<given-names><![CDATA[Ursula M.]]></given-names>
</name>
<name>
<surname><![CDATA[Hutchinson]]></surname>
<given-names><![CDATA[G. Evelyn]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[El Bajo de Santa Fe]]></article-title>
<source><![CDATA[Transactions of the American Philosophical Society]]></source>
<year>1963</year>
<volume>53</volume>
<page-range>3-51</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cox]]></surname>
<given-names><![CDATA[F.E.G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[History of Human Parasitology]]></article-title>
<source><![CDATA[Clinical Microbiology Reviews]]></source>
<year>2002</year>
<volume>15</volume>
<page-range>595-612</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Crandall]]></surname>
<given-names><![CDATA[James M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Water and the Mountains: Maya Water Management at Caracol, Belize]]></source>
<year>2009</year>
<publisher-loc><![CDATA[Orlando, Florida, USA ]]></publisher-loc>
<publisher-name><![CDATA[University of Central Florida]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[El Rafie]]></surname>
<given-names><![CDATA[Sh.]]></given-names>
</name>
<name>
<surname><![CDATA[Mohamed]]></surname>
<given-names><![CDATA[M.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Hawash]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Human Urine as Alternative Natural Slow Release Fertilizer]]></article-title>
<source><![CDATA[Der Chemica Sinica]]></source>
<year>2012</year>
<volume>3</volume>
<page-range>1311-24</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[L.F.]]></given-names>
</name>
<name>
<surname><![CDATA[Araújo]]></surname>
<given-names><![CDATA[A.J.G. de]]></given-names>
</name>
<name>
<surname><![CDATA[Confalonieri]]></surname>
<given-names><![CDATA[U.E.C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Finding of Helminth Eggs in a Brazilian Mummy]]></article-title>
<source><![CDATA[Transactions of the Royal Society of Tropical Medicine and Hygiene]]></source>
<year>1983</year>
<volume>77</volume>
<page-range>65-7</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Follett]]></surname>
<given-names><![CDATA[Roy Hunter]]></given-names>
</name>
<name>
<surname><![CDATA[Murphy]]></surname>
<given-names><![CDATA[Larry S.]]></given-names>
</name>
<name>
<surname><![CDATA[Donahue]]></surname>
<given-names><![CDATA[Roy L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fertilizers and Soil Amendments]]></source>
<year>1981</year>
<publisher-loc><![CDATA[Englewood Cliffs ]]></publisher-loc>
<publisher-name><![CDATA[Prentice-Hall, Inc.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="book">
<collab>Food and Agriculture Organization of the United Nations (FAO)</collab>
<source><![CDATA[Crop Water Information]]></source>
<year>2016</year>
<publisher-loc><![CDATA[Rome ]]></publisher-loc>
<publisher-name><![CDATA[Food and Agriculture Organization of the United Nations]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[French]]></surname>
<given-names><![CDATA[Kirk D.]]></given-names>
</name>
<name>
<surname><![CDATA[Duffy]]></surname>
<given-names><![CDATA[Christopher J.]]></given-names>
</name>
<name>
<surname><![CDATA[Bhatt]]></surname>
<given-names><![CDATA[Gopal]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Hydroarchaeological Method: A case Study at the Maya Site of Palenque]]></article-title>
<source><![CDATA[Latin American Antiquity]]></source>
<year>2012</year>
<volume>23</volume>
<page-range>29-50</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[French]]></surname>
<given-names><![CDATA[Kirk D.]]></given-names>
</name>
<name>
<surname><![CDATA[Duffy]]></surname>
<given-names><![CDATA[Christopher J.]]></given-names>
</name>
<name>
<surname><![CDATA[Bhatt]]></surname>
<given-names><![CDATA[Gopal]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Urban Hydrology and Hydraulic Engineering at the Classic Maya Site of Palenque]]></article-title>
<source><![CDATA[Water History]]></source>
<year>2013</year>
<volume>5</volume>
<page-range>43-69</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gardi]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Angelini]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Barcelo]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Comerma]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Gaistardo]]></surname>
<given-names><![CDATA[C. Cruz]]></given-names>
</name>
<name>
<surname><![CDATA[Encina Rojas]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Soil Atlas of Latin America and the Caribbean]]></source>
<year>2015</year>
<publisher-loc><![CDATA[Luxembourg ]]></publisher-loc>
<publisher-name><![CDATA[European Commission]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gerba]]></surname>
<given-names><![CDATA[Charles P]]></given-names>
</name>
<name>
<surname><![CDATA[Smith Jr]]></surname>
<given-names><![CDATA[James E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sources of Pathogenic Microorganisms and their Fate during Land Application of Wastes]]></article-title>
<source><![CDATA[Journal of Environmental Quality]]></source>
<year>2005</year>
<volume>34</volume>
<page-range>42-8</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gonçalves]]></surname>
<given-names><![CDATA[Marcelo]]></given-names>
</name>
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[Luiz]]></given-names>
</name>
<name>
<surname><![CDATA[Araújo]]></surname>
<given-names><![CDATA[Adauto]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Luiz Fernando]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Human Intestinal Parasites in the Past: New Findings and a Review]]></article-title>
<source><![CDATA[Memórias do Instituto Oswaldo Cruz]]></source>
<year>2003</year>
<volume>98</volume>
<numero>^s1</numero>
<issue>^s1</issue>
<supplement>1</supplement>
<page-range>103-8</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gowers]]></surname>
<given-names><![CDATA[Emily]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Anatomy of Rome from Capitol to Cloaca]]></article-title>
<source><![CDATA[Journal of Roman Studies]]></source>
<year>1995</year>
<volume>85</volume>
<page-range>23-32</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grandjean]]></surname>
<given-names><![CDATA[Ann C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water Requirements, Impinging Factors, and Recommended Intakes]]></article-title>
<source><![CDATA[Nutrients in Drinking Water]]></source>
<year>2005</year>
<page-range>25-40</page-range><publisher-loc><![CDATA[Geneva ]]></publisher-loc>
<publisher-name><![CDATA[World Health Organization]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gray]]></surname>
<given-names><![CDATA[Harold Farnsworth]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sewerage in Ancient and Medieval Times]]></article-title>
<source><![CDATA[Sewage Works Journal]]></source>
<year>1940</year>
<volume>12</volume>
<page-range>939-46</page-range></nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Haviland]]></surname>
<given-names><![CDATA[William]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Settlement, Society, and Demography of Tikal]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Sabloff]]></surname>
<given-names><![CDATA[Jeremy A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Tikal: Dynasties, Foreigners, and Affairs of State]]></source>
<year>2003</year>
<page-range>11-142</page-range><publisher-loc><![CDATA[Santa Fe ]]></publisher-loc>
<publisher-name><![CDATA[School of American Research Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hays]]></surname>
<given-names><![CDATA[J.N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Epidemics and Pandemics: Their Impact on Human History]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Denver (CO) ]]></publisher-loc>
<publisher-name><![CDATA[ABC-Clio]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hopkins]]></surname>
<given-names><![CDATA[John N. N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Cloaca Maxima and the Monumental Manipulation of Water in Archaic Rome]]></article-title>
<source><![CDATA[The Waters of Rome]]></source>
<year>2007</year>
<numero>4</numero>
<issue>4</issue>
<page-range>1-15</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Horne]]></surname>
<given-names><![CDATA[Patrick D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A Review of the Evidence of Human Endoparasitism in the Pre-Columbian New World through the Study of Coprolites]]></article-title>
<source><![CDATA[Journal of Archaeological Science]]></source>
<year>1985</year>
<volume>12</volume>
<page-range>299-310</page-range></nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hossain]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Alam]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Rahman]]></surname>
<given-names><![CDATA[M. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Rahaman]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Nobi]]></surname>
<given-names><![CDATA[M. N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Financial Variability of Shifting Cultivation Versus Agroforestry Project: A Case Study in Chittagong Hill Tracts]]></article-title>
<source><![CDATA[International Journal of Agriculture and Biology]]></source>
<year>2006</year>
<volume>8</volume>
<page-range>29-34</page-range></nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Houston]]></surname>
<given-names><![CDATA[Stephen D.]]></given-names>
</name>
<name>
<surname><![CDATA[Inomata]]></surname>
<given-names><![CDATA[Takeshi]]></given-names>
</name>
</person-group>
<source><![CDATA[The Classic Maya]]></source>
<year>2009</year>
<publisher-loc><![CDATA[Cambridge ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hypes]]></surname>
<given-names><![CDATA[Warren D.]]></given-names>
</name>
<name>
<surname><![CDATA[Hall Jr]]></surname>
<given-names><![CDATA[John B.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendell]]></surname>
<given-names><![CDATA[W. W.]]></given-names>
</name>
</person-group>
<source><![CDATA[The Environmental Control and Life-Support System for a Lunar Base - What Drives its Design]]></source>
<year>1992</year>
<conf-name><![CDATA[ The Second Conference on Lunar Bases and Space Activities of the 21st Century]]></conf-name>
<conf-loc> </conf-loc>
<page-range>503-11</page-range><publisher-name><![CDATA[Houston: National Aeronautics and Space Administration]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Isendahl]]></surname>
<given-names><![CDATA[Christian]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Weight of Water: A New Look at Pre-Hispanic Puuc Maya Water Reservoirs]]></article-title>
<source><![CDATA[Ancient Mesoamerica]]></source>
<year>2011</year>
<volume>22</volume>
<page-range>185-97</page-range></nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jönsson]]></surname>
<given-names><![CDATA[Håkan]]></given-names>
</name>
<name>
<surname><![CDATA[Vinnerås]]></surname>
<given-names><![CDATA[Björn]]></given-names>
</name>
</person-group>
<source><![CDATA[Adapting the Nutrient Content of Urine and Faeces in Different Countries Using FAO and Swedish Data]]></source>
<year>2003</year>
<conf-name><![CDATA[ Proceedings on the Second International Symposium on Ecological Sanitation]]></conf-name>
<conf-loc> </conf-loc>
<page-range>623-6</page-range><publisher-loc><![CDATA[Lübeck, Germany ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B42">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jó&#378;wiakowski]]></surname>
<given-names><![CDATA[Krzysztof]]></given-names>
</name>
<name>
<surname><![CDATA[Korni&#322;&#322;owicz-Kowalska]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<name>
<surname><![CDATA[Iglik]]></surname>
<given-names><![CDATA[Helena]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estimation of Sanitary Status of Sewage Treated in Constructed Wetland Systems]]></article-title>
<source><![CDATA[Contemporary Problems of Management and Environmental Protection]]></source>
<year>2009</year>
<volume>4</volume>
<page-range>7-21</page-range></nlm-citation>
</ref>
<ref id="B43">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leles]]></surname>
<given-names><![CDATA[Daniela]]></given-names>
</name>
<name>
<surname><![CDATA[Araújo]]></surname>
<given-names><![CDATA[Adauto]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Luiz Fernando]]></given-names>
</name>
<name>
<surname><![CDATA[Paulo Vicente]]></surname>
<given-names><![CDATA[Ana Carolina]]></given-names>
</name>
<name>
<surname><![CDATA[Mayo Iñiguez]]></surname>
<given-names><![CDATA[Alena]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Molecular Paleoparasitological Diagnosis of Ascaris sp. from Coprolites: New Scenery of Ascariasis in Pre-Columbian South America time]]></article-title>
<source><![CDATA[Memórias do Instituto Oswaldo Cruz]]></source>
<year></year>
<volume>103</volume>
<page-range>106-8</page-range></nlm-citation>
</ref>
<ref id="B44">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lentz]]></surname>
<given-names><![CDATA[David L.]]></given-names>
</name>
<name>
<surname><![CDATA[Dunning]]></surname>
<given-names><![CDATA[Nicholas P.]]></given-names>
</name>
<name>
<surname><![CDATA[Scarborough]]></surname>
<given-names><![CDATA[Vernon L.]]></given-names>
</name>
<name>
<surname><![CDATA[Magee]]></surname>
<given-names><![CDATA[Kevin S.]]></given-names>
</name>
<name>
<surname><![CDATA[Thompson]]></surname>
<given-names><![CDATA[Kim M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Forests, Fields, and the Edge of Sustainability at the Ancient Maya City of Tikal]]></article-title>
<source><![CDATA[Proceedings of the National Academy of Science USA]]></source>
<year>2014</year>
<volume>111</volume>
<page-range>18513-8</page-range></nlm-citation>
</ref>
<ref id="B45">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lucero]]></surname>
<given-names><![CDATA[Lisa J.]]></given-names>
</name>
<name>
<surname><![CDATA[Fedick]]></surname>
<given-names><![CDATA[Scott L.]]></given-names>
</name>
<name>
<surname><![CDATA[Dunning]]></surname>
<given-names><![CDATA[Nicholas P.]]></given-names>
</name>
<name>
<surname><![CDATA[Lentz]]></surname>
<given-names><![CDATA[David L.]]></given-names>
</name>
<name>
<surname><![CDATA[Scarborough]]></surname>
<given-names><![CDATA[Vernon L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water and Landscape: Ancient Maya Settlement Decisions]]></article-title>
<source><![CDATA[Archaeological Papers of the American Anthropological Association]]></source>
<year>2014</year>
<volume>24</volume>
<page-range>30-42</page-range></nlm-citation>
</ref>
<ref id="B46">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Magnoni]]></surname>
<given-names><![CDATA[Aline]]></given-names>
</name>
<name>
<surname><![CDATA[Clark]]></surname>
<given-names><![CDATA[Jeffrey T.]]></given-names>
</name>
<name>
<surname><![CDATA[Hagemeister]]></surname>
<given-names><![CDATA[Emily M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Population Estimates at the Ancient Maya City of Chunchucmil, Yucatán, Mexico]]></source>
<year>2006</year>
<conf-name><![CDATA[ Digital Discovery: Exploring New Frontiers in Human Heritage, CAA 2006 Computer Applications and Quantitative Methods in Archaeology Proceedings of the 34th Conference]]></conf-name>
<conf-loc> </conf-loc>
<publisher-loc><![CDATA[Fargo, USA ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B47">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McAnany]]></surname>
<given-names><![CDATA[Patricia A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water Storage in the Puuc Region of Northern Maya Lowlands: A Key to Population Estimates and Architectural Variability]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Patrick Culbert]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Rice]]></surname>
<given-names><![CDATA[Don S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Precolumbian Population History in the Maya Lowlands]]></source>
<year>1990</year>
<page-range>263-84</page-range><publisher-loc><![CDATA[Albuquerque ]]></publisher-loc>
<publisher-name><![CDATA[University of New Mexico Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B48">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McAnany]]></surname>
<given-names><![CDATA[Patricia A.]]></given-names>
</name>
<name>
<surname><![CDATA[Gallareta Negrón]]></surname>
<given-names><![CDATA[Tomás]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bellicose Rulers and Climatological Perils? Retrofitting Twenty-First-Century Woes on Eighth-Century Maya Society]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[McAnany]]></surname>
<given-names><![CDATA[Patricia A.]]></given-names>
</name>
<name>
<surname><![CDATA[Yoffee]]></surname>
<given-names><![CDATA[Norman]]></given-names>
</name>
</person-group>
<source><![CDATA[Questioning Collapse: Human Resilience, Ecological Vulnerability, and the Aftermath of Empire]]></source>
<year>2010</year>
<page-range>142-75</page-range><publisher-loc><![CDATA[Cambridge ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B49">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Meng]]></surname>
<given-names><![CDATA[Xiang-Jin]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[From Barnyards to Food Table: The Omnipresence of Hepatitis E Virus and Risk of Zoonotic Infection and Food Safety]]></article-title>
<source><![CDATA[Virus Research]]></source>
<year>2011</year>
<volume>16</volume>
<page-range>23-30</page-range></nlm-citation>
</ref>
<ref id="B50">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nelson]]></surname>
<given-names><![CDATA[Kenrad E.]]></given-names>
</name>
<name>
<surname><![CDATA[Williams]]></surname>
<given-names><![CDATA[Carolyn F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Early History of Infectious Disease]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Nelson]]></surname>
<given-names><![CDATA[Kenrad E.]]></given-names>
</name>
<name>
<surname><![CDATA[Williams]]></surname>
<given-names><![CDATA[Carolyn F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Infectious Disease Epidemiology: Theory and Practice]]></source>
<year>2007</year>
<edition>2</edition>
<page-range>1-21</page-range><publisher-loc><![CDATA[Burlington, MA ]]></publisher-loc>
<publisher-name><![CDATA[Jones and Bartlett Publishers]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B51">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Palmquist]]></surname>
<given-names><![CDATA[Helena]]></given-names>
</name>
<name>
<surname><![CDATA[Jönsson]]></surname>
<given-names><![CDATA[Håkan]]></given-names>
</name>
</person-group>
<source><![CDATA[Urine, Faeces, Greywater and Biodegradable Solid Wastes as Potential Fertilizers]]></source>
<year>2003</year>
<conf-name><![CDATA[ 2International Symposium on Ecological Sanitation]]></conf-name>
<conf-loc> </conf-loc>
<page-range>587-94</page-range><publisher-loc><![CDATA[Lübeck, Germany ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B52">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Parker]]></surname>
<given-names><![CDATA[Dick]]></given-names>
</name>
<name>
<surname><![CDATA[Gallagher]]></surname>
<given-names><![CDATA[S. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendell]]></surname>
<given-names><![CDATA[W. W.]]></given-names>
</name>
</person-group>
<source><![CDATA[Distribution of Human Waste Samples in Relation to Sizing Waste Processing in Space]]></source>
<year>1992</year>
<conf-name><![CDATA[ The Second Conference on Lunar Bases and Space Activities of the 21st Century]]></conf-name>
<conf-loc> </conf-loc>
<page-range>563-8</page-range><publisher-loc><![CDATA[Houston ]]></publisher-loc>
<publisher-name><![CDATA[National Aeronautics and Space Administration]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B53">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pinsem]]></surname>
<given-names><![CDATA[Wantana]]></given-names>
</name>
<name>
<surname><![CDATA[Vinnerås]]></surname>
<given-names><![CDATA[Björn]]></given-names>
</name>
</person-group>
<source><![CDATA[Composting with Human Urine: Plant Fertilizer Approach]]></source>
<year>2003</year>
<conf-name><![CDATA[ Second International Symposium on Ecological Sanitation]]></conf-name>
<conf-loc> </conf-loc>
<page-range>607-14</page-range><publisher-loc><![CDATA[Lübeck, Germany ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B54">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ranjan]]></surname>
<given-names><![CDATA[Rajiv]]></given-names>
</name>
<name>
<surname><![CDATA[Upadhyay]]></surname>
<given-names><![CDATA[V. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ecological Problems Due to Shifting Cultivation]]></article-title>
<source><![CDATA[Current Science]]></source>
<year>1999</year>
<volume>77</volume>
<page-range>1246-9</page-range></nlm-citation>
</ref>
<ref id="B55">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reinhard]]></surname>
<given-names><![CDATA[Karl]]></given-names>
</name>
<name>
<surname><![CDATA[Araújo]]></surname>
<given-names><![CDATA[Adauto]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Luiz Fernando]]></given-names>
</name>
<name>
<surname><![CDATA[Coimbra]]></surname>
<given-names><![CDATA[Carlos E. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[American Hookworm Antiquity]]></article-title>
<source><![CDATA[Medical Anthropology: Cross-Cultural Studies in Health and Illness]]></source>
<year>2001</year>
<volume>20</volume>
<page-range>96-101</page-range></nlm-citation>
</ref>
<ref id="B56">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rice]]></surname>
<given-names><![CDATA[Don S.]]></given-names>
</name>
<name>
<surname><![CDATA[Culbert]]></surname>
<given-names><![CDATA[T. Patrick]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Historical Contexts for Historical Reconstruction in the Maya Lowlands]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Culbert]]></surname>
<given-names><![CDATA[T. Patrick]]></given-names>
</name>
<name>
<surname><![CDATA[Rice]]></surname>
<given-names><![CDATA[Don S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Precolumbian Population History in the Maya Lowlands]]></source>
<year>1990</year>
<page-range>1-36</page-range><publisher-loc><![CDATA[Albuquerque ]]></publisher-loc>
<publisher-name><![CDATA[University of New Mexico Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B57">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Santamaría]]></surname>
<given-names><![CDATA[Johanna]]></given-names>
</name>
<name>
<surname><![CDATA[Torzanos]]></surname>
<given-names><![CDATA[Gary A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Enteric Pathogens and Soil: A Short Review]]></article-title>
<source><![CDATA[International Microbiology]]></source>
<year>2003</year>
<volume>6</volume>
<page-range>5-9</page-range></nlm-citation>
</ref>
<ref id="B58">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Santley]]></surname>
<given-names><![CDATA[Robert S.]]></given-names>
</name>
<name>
<surname><![CDATA[Killion]]></surname>
<given-names><![CDATA[Thomas W.]]></given-names>
</name>
<name>
<surname><![CDATA[Lycett]]></surname>
<given-names><![CDATA[Mark T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[On the Maya Collapse]]></article-title>
<source><![CDATA[Journal of Anthropological Research]]></source>
<year>1986</year>
<volume>42</volume>
<page-range>123-59</page-range></nlm-citation>
</ref>
<ref id="B59">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sawyer]]></surname>
<given-names><![CDATA[John]]></given-names>
</name>
<name>
<surname><![CDATA[Mallarino]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nutrient Removal When Harvesting Corn Stover]]></article-title>
<source><![CDATA[Integrated Crop Management News]]></source>
<year>2007</year>
<publisher-loc><![CDATA[Carroll (IA) ]]></publisher-loc>
<publisher-name><![CDATA[Iowa State University]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B60">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Scarborough]]></surname>
<given-names><![CDATA[Vernon L.]]></given-names>
</name>
<name>
<surname><![CDATA[Gallopin]]></surname>
<given-names><![CDATA[Gary G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A Water Storage Adaptation in the Maya Lowlands]]></article-title>
<source><![CDATA[Science]]></source>
<year>1991</year>
<volume>251</volume>
<page-range>658-62</page-range></nlm-citation>
</ref>
<ref id="B61">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Scarborough]]></surname>
<given-names><![CDATA[Vernon L.]]></given-names>
</name>
<name>
<surname><![CDATA[Dunning]]></surname>
<given-names><![CDATA[Nicholas P.]]></given-names>
</name>
<name>
<surname><![CDATA[Tankersley]]></surname>
<given-names><![CDATA[Kenneth B.]]></given-names>
</name>
<name>
<surname><![CDATA[Carr]]></surname>
<given-names><![CDATA[Christopher]]></given-names>
</name>
<name>
<surname><![CDATA[Weaver]]></surname>
<given-names><![CDATA[Eric]]></given-names>
</name>
<name>
<surname><![CDATA[Grazioso]]></surname>
<given-names><![CDATA[Liwy]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water and Sustainable Land Use at the Ancient Tropical City of Tikal, Guatemala]]></article-title>
<source><![CDATA[Proceedings on the National Academy of Science USA]]></source>
<year>2012</year>
<volume>109</volume>
<page-range>12408-13</page-range></nlm-citation>
</ref>
<ref id="B62">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sharer]]></surname>
<given-names><![CDATA[Robert J.]]></given-names>
</name>
</person-group>
<source><![CDATA[The Ancient Maya]]></source>
<year>1994</year>
<edition>Fifth</edition>
<publisher-loc><![CDATA[Stanford, CA ]]></publisher-loc>
<publisher-name><![CDATA[Stanford University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B63">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Simmonds]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reconstructing the Origins of Human Hepatitis Viruses]]></article-title>
<source><![CDATA[Philosophical Transactions of the Royal Society B]]></source>
<year>2001</year>
<volume>356</volume>
<page-range>1013-26</page-range></nlm-citation>
</ref>
<ref id="B64">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stintzing]]></surname>
<given-names><![CDATA[A. Richert]]></given-names>
</name>
<name>
<surname><![CDATA[Jönsson]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Vinnerås]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Salomon]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Bernal]]></surname>
<given-names><![CDATA[María del Pilar]]></given-names>
</name>
<name>
<surname><![CDATA[Moral]]></surname>
<given-names><![CDATA[Raúl]]></given-names>
</name>
<name>
<surname><![CDATA[Clemente]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<name>
<surname><![CDATA[Paredes]]></surname>
<given-names><![CDATA[Concepción]]></given-names>
</name>
</person-group>
<source><![CDATA[&#8220;Guidelines for the Use of Human Urine and Faeces in Crop Production&#8221;, Sustainable Organic Waste Management for Environmental Protection and Food Safety]]></source>
<year>2004</year>
<volume>II</volume>
<conf-name><![CDATA[ RAMIRAN 2004: Proceedings of the 11th International Conference of the FAO ESCORENA Network on the Recycling of Agricultural Municipal and Industrial Residues in Agriculture]]></conf-name>
<conf-date>6-9 October</conf-date>
<conf-loc>Murcia, Spain </conf-loc>
<page-range>357-60</page-range></nlm-citation>
</ref>
<ref id="B65">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Strauch]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Survival of Pathogenic Micro-Organisms and Parasites in Excreta, Manure and Sewage Sludge]]></article-title>
<source><![CDATA[Scientific and Technical Review of the International Office of Epizooties]]></source>
<year>1991</year>
<volume>10</volume>
<page-range>813-46</page-range></nlm-citation>
</ref>
<ref id="B66">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turner II]]></surname>
<given-names><![CDATA[B.L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Population Reconstruction for the Central Maya Lowlands: 1000 B.C. to A.D. 1500]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Patrick Culbert]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Rice]]></surname>
<given-names><![CDATA[Don S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Precolumbian Population History in the Maya Lowlands]]></source>
<year>1990</year>
<page-range>301-24</page-range><publisher-loc><![CDATA[Albuquerque ]]></publisher-loc>
<publisher-name><![CDATA[University of New Mexico Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B67">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Webster]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
</person-group>
<source><![CDATA[Three Maya Settlements Projects and some Implications]]></source>
<year>2008</year>
<conf-name><![CDATA[ 6Palenque Mesa Redonda]]></conf-name>
<conf-date>16-21 November</conf-date>
<conf-loc>Chiapas, Mexico </conf-loc>
</nlm-citation>
</ref>
<ref id="B68">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Weiss-Krejci]]></surname>
<given-names><![CDATA[Estella]]></given-names>
</name>
<name>
<surname><![CDATA[Sabbas]]></surname>
<given-names><![CDATA[Thomas]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Potential Role of Small Depressions as Water Storage Features in the Central Maya Lowlands]]></article-title>
<source><![CDATA[Latin American Antiquity]]></source>
<year>2002</year>
<volume>13</volume>
<page-range>343-57</page-range></nlm-citation>
</ref>
<ref id="B69">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wiley]]></surname>
<given-names><![CDATA[B. Beaufort]]></given-names>
</name>
<name>
<surname><![CDATA[Westerberg]]></surname>
<given-names><![CDATA[Stephen C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Survival of Human Pathogens in Composted Sewage]]></article-title>
<source><![CDATA[Applied Microbiology]]></source>
<year>1969</year>
<volume>18</volume>
<page-range>994-1001</page-range></nlm-citation>
</ref>
<ref id="B70">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[Alfred]]></given-names>
</name>
<name>
<surname><![CDATA[Ribeiro]]></surname>
<given-names><![CDATA[Christine]]></given-names>
</name>
<name>
<surname><![CDATA[Gomes]]></surname>
<given-names><![CDATA[Roxanne]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estimation of Ancient Maya Population: Basic Human Nutritional Needs for Sustenance]]></article-title>
<source><![CDATA[Journal of Archaeological Science]]></source>
<year>2017</year>
<volume>13</volume>
<page-range>435-54</page-range></nlm-citation>
</ref>
<ref id="B71">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[Alfred]]></given-names>
</name>
<name>
<surname><![CDATA[Emerson]]></surname>
<given-names><![CDATA[Fanny]]></given-names>
</name>
<name>
<surname><![CDATA[Oakley]]></surname>
<given-names><![CDATA[Max X.]]></given-names>
</name>
</person-group>
<source><![CDATA[Estimation of Ancient Maya Population: Food Supply]]></source>
<year>2017</year>
</nlm-citation>
</ref>
<ref id="B72">
<nlm-citation citation-type="book">
<collab>World Health Organization</collab>
<source><![CDATA[Guidelines for the Safe Use of Wastewater, Excreta and Greywater. Volume 4 - Excreta and greywater use in agriculture]]></source>
<year>2006</year>
<publisher-loc><![CDATA[Geneva ]]></publisher-loc>
<publisher-name><![CDATA[World Health Organization]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B73">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wyatt]]></surname>
<given-names><![CDATA[Andrew R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Scale and Organization of Ancient Maya Water Management]]></article-title>
<source><![CDATA[WIREs Water]]></source>
<year>2014</year>
<volume>1</volume>
<page-range>449-67</page-range></nlm-citation>
</ref>
<ref id="B74">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yugo]]></surname>
<given-names><![CDATA[Danielle M.]]></given-names>
</name>
<name>
<surname><![CDATA[Meng]]></surname>
<given-names><![CDATA[Xiang-Jin]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hepatitis E Virus: Foodborne, Waterborne and Zoonotic Transmission]]></article-title>
<source><![CDATA[International Journal of Environmental Research and Public Health]]></source>
<year>2013</year>
<volume>10</volume>
<page-range>4507-33</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
