Walther, John Victor, Essentials of geochemistry / John V. Walther - 2nd ed. - xv, 797 páginas : ilustraciones ISBN: 9780763759223 (papel alcalino) 0763759228 (papel alcalino) Subjects--Topical Terms: Geoquímica LC Class. No.: QE515 / W35 2009 Dewey Class. No.: 551.9