1990-8644 1990-8644 S1990-86442020000600209 México Colombia Colombia 00 12 2020 00 12 2020 16 77 209 217

1982 2017 28 4 4 2016 2010 Colombia. Congreso de la República 1991 Colombia. Congreso de la República 2016 Colombia. Ministerio de Educacion Nacional 2019 2015 2017 1996 2008 2020 1973 42 61-76 2014 International Organization for Standardization 2015 2004 2010 2012 2012 2020 2002 2017 71 251-73 2005