Colombia 1 Industria minera 1 Mining industry and finance 1 agricultural soils 1 anl̀isis multivariado 1 cobre 1 contaminacin̤ 1 больше ... contamination 1 copper 1 environment 1 environmental impact 1 gold 1 heavy metals 1 hierro 1 impacto ambiental 1 iron 1 medio ambiente 1 mercurio 1 mercury 1 metales pesados 1 minera̕ 1 mining multivariate analysis 1 oro soil 1 suelos 1 suelos agrc̕olas 1 меньше ...