0123-1472 0123-1472 S0123-14722017000100074 10.11144/javeriana.cc18-45.geof Colombia 00 06 2017 00 06 2017 18 45 74 85

1961 2008 9 25 25 465-86 2006 1981 2014 2008 2004 74 12 12 38-42