1870-0063 1870-0063 S1870-00632021000100247 10.29092/uacm.v18i45.818 USA 00 04 2021 00 04 2021 18 45 247 269

2014 ACNUR 2014 ACNUR 2015 2008 1991 14 14 37-47 1987 2015 2013 2020 2014 29 1 1 55-87 1998 32 4 4 901-25 2000 2013 20 3 3 323-36 2000 2009 2002 24 3 3 640-61 2015 2013 2006 19 4 4 471-87 2015 27 11-7 2016 56 12-25 1991 15 15 39-165 2015 1993 2016 48 1 1 28-35 1983 2010 2016 2000 2006 111 4 4 999-1037 2012 117 5 5 1380-424 2014 16 4 4 733-42 2010 2014 12 2 2 259-78 2012 1985 2016 1999 38 9 9 1173-9 The Mesoamerican Working Group 2013 1998 46-59 2003 2011 2006 112 1 1 1-45 2016 1993 64 64 249-75 1996 60 60 989-1050 2004 56 3 3 759-79