PALACHE, CHARLES Y OTROS THE SYSTEM OF MINERALOGY ELEMENTS, SULFIDES, SULFOSALTS, OXIDES - 7 - NEW YORK-U.S.A. JOHN WILEY Y SONS 1944 - 834 pag 23 cm - 0 1 . CLASIFICATION-HABIT/CHEMISTRY-SYNTHESIS Subjects--Topical Terms: CIENCIAS PURAS Dewey Class. No.: 549 / P19