Misari Chiquipoma, Fidel Removal of metallic impurities of metallurgical plants efluents through precipitation with H2S generated from lead concentrates - Lima Colegio de Ingenieros del Perú 1999 - pp. 403-407 ilus., tbls. Subjects--Topical Terms: DRENAJE ACIDO MINAPLOMOTRATAMIENTO DE EFLUENTES Universal Decimal Class. No.: P/061.3:622+502.55/C74|68