Hakutulokset - Teng Yanguo

China Dexing Industria minera Mining industry and finance anl̀isis de componentes principales contaminacin̤ contamination enrichment factor environment environmental impact factor de enriquecimiento geoaccumulation index heavy metals impacto ambiental medio ambiente metales pesados minera̕ mining n̕dice de contaminacin̤ n̕dice de geoacumulacin̤ pollution index principal component analysis soil suelos