1990-8644 1990-8644 S1990-86442018000500106 Colombia 00 12 2018 00 12 2018 14 106 111

2011 2015 2010 2015 1 2016 2016 2007 2002 32 4 4 21-38 1971 1977 1993 1990 16 16 11-39 2007 2014 24 24 107-26 1984 2014 1977 2008 1969 2016