Walther, John Victor. <br/><br/>
Essentials of geochemistry / 
by John V. Walther. 
 - 2nd ed. 
 - Sudbury, Mass. :  Jones and Bartlett Publishers,  c2009. 
 - xv, 797 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780763759223 (alk. paper) 0763759228 (alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geochemistry.
<br/><br/><label>Dewey Class. No.: </label>551.9  / WAL/E