0864-084X 0864-084X S0864-084X2018000200059 Peru Perú Perú 00 12 2018 00 12 2018 64 59 63

[1] 2011 11 2 2 131-41 [2] 2011 113 3 3 303-12 [3] CESEL 1999 [4] INGEMMET 1988 [5] 1994 [6] 2005 [7] 2008 Montpelier, France [8] 2007 Helsinki, Finland