1794-2489 1794-2489 S1794-24892018000100409 10.25058/20112742.n28.18 Colombia Colombia 00 06 2018 00 06 2018 28 409 423

2000 2009 185 185 10-6 1972 ONU 1987 ONU 2000 ONU 2015 2011 1995