2619-6573 2619-6573 S2619-65732017000200151 10.15446/ede.v27n51.69917 Colombia Colombia 00 12 2017 00 12 2017 27 51 151 162

1986 129-55 2010 855 1937 1945 80 215-26 2007 1998 1986 22 22 13 1989 2006 1992 1995 2006 1985