0121-053X 0121-053X S0121-053X2019000200067 10.19053/0121053x.n34.2019.9934 Colombia 00 12 2019 00 12 2019 34 67 85

2006 5 2 2 1-16 2008 2016 a 29 2 2 183-201 2016 b 1999 2012 1970 1 18 2015 26 103-19 1995 Grupo Planeta (GBS) 2001 2002 47 4 4 498-512 1974 1997 2005