Cunningham; William P <br/><br/>
environmental science: a global concern / 
Cunningham; William P. 
 - 11th ed 
 - Boston:  Mc Graw Hill,  2009. 
 - 611p;28cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>007017167X 
<br/><br/><label>Dewey Class. No.: </label>333.7 CUN