WHITTEN, D.G.A. Y BROOKS J.R.V. THE PENGUIN DICTIONARY OF GEOLOGY - 0 - U.S.A. PENGUIN BOOKS 1972 - 487 pag. 18 cm - 0 0 . DICCIONARIO-GEOLOGIA/TABLAS-MINERALES ISBN: 014-051-049-4 Subjects--Topical Terms: CIENCIAS PURAS Dewey Class. No.: 550.3 / W55