Cunningham, William P. <br/><br/>
Principles of environmental science: inquiry and applications / 
Cunningham, William P. 
 - 3rd ed. 
 - Boston:  McGraw-Hill,  2006. 
 - xviii,428p.;26cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0072823399 
<br/><br/><label>Dewey Class. No.: </label>363.7 CUN