0120-3630 0120-3630 S0120-36302018000200021 10.15446/rbct.n44.61646 Colombia 00 12 2018 00 12 2018 44 21 30

[1] 2008 33 3 3 505-18 [2] Agencia Nacional de Minería [3] DANE [4] 1989 127-46 [5] 2011 [6] 1995 35 35 2-3 [7] 2001 [8] 2008 103 4 4 663-87 [9] 2012 34 34 170-94 [10]