1390-1249 1390-1249 S1390-12492017000200023 10.17141/iconos.59.2017.2612 Colombia 00 09 2017 00 09 2017 59 23 53

2007 25 25 121-8 1997 1968 2009 9 9 1984 1990 2008 1989 2008 2008 335-54 2012 1998 2010 1989 1991 2015 42 42 13-31 2012 27 3 3 427-45 2005 2003 1 19-40 2005 2006 2016 Coimbra, Portugal 2005 34 34 159-79 2008 345-6 1996 2007 2003 1998 266-85 2006