Speidel, David H.,  1938- <br/><br/>
The natural geochemistry of our environment / 
David H. Speidel and Allen F. Agnew 
 - Boulder, Colo. :  Westview Press,  1982 
 - xv, 214 p. :  ill. ;  24 cm. 
 - Westview special studies in natural resources and energy management .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0865311102 :  USD 32.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geochemistry<br/>Environmental chemistry<br/>Organisms
<br/><br/><label>Dewey Class. No.: </label>551.9