2007-7610 2007-7610 S2007-76102020000200160 10.31644/ed.v7.n2.2020.a06 Mexico 00 12 2020 00 12 2020 7 2 160 193

1999 6 6 59-90 2001 1959 24 50 50 5-42 1993 1996 3 1 1 33-8 1999 2000 5 9 9 129-49 2009 221-63 2000 27-41 2016 1980 2018 2019 2004 2011 2017 2011 2009 1994 81-97 2009 501-53 1999 2004 2010 2012 1997 77-90 2001 277 2 2000 43-61 2014 1 4 4 1-18 1975 2017 1994 245-77 2009 581-634 1980 2010 2013 2008 2015 2006 2009 291-352 1997 2018 1987 2003 135-66 AGEV 1864 Gobierno del estado de Veracruz 1831 Universidad Nacional Autónoma de México 1950 42 42 2019 2019 2019 2019 2019 2018