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ES1874005235A1874-11-111874-11-11Nuevo metodo para el tratamiento metalurgico aplicable a los minerales auriferos y argentiferos, y otros
ExpiredES5235H1
(es)
Un procedimiento para tratar metalúrgicamente cuantos minerales de cobre en general ofrece la naturaleza por la vía húmeda y obtener de ellos tanto el cobre como cuantos metales preciosos contengan.