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pagina para indagar de minería: www.kitco.com PRESIO spot: presio de actual del mineral.1 mes 3 semanas dependiendo la flucctuacion.(hasta dos veces en el dia ) EPA… AJENCIA DE PROTECCION MEDIO AMBIENTAL (cobre anti bacterisida) COMODITIS: SON PRODUCTOS Q NO HA SIDO PROCESADO , MAIZ PAPA, ORO METALES NO FERROSOS( CU, ZN,PB ): Tiene minima cantida de fe, BONO: