0121-7550 0121-7550 S0121-75502018000200231 10.30578/nomadas.n49a13 Colombia 00 12 2018 00 12 2018 49 231 243

1 1987 46 2 1997 3 2011 4 1996 5 1995 6 2014 7 2001 58 58 2-14 8 2003 9 2015 10 2002 11 2011 12 1988 25 47-107 13 2001 3 1 1 89-114 14 2004