Cunningham, William P. <br/><br/>
Principles of environmental science: 	  inquiry and applications/   
William P. Cunningham and Mary Ann Cunningham. 
 - 4th edition 
 - Boston:   McGraw-Hill Higher Education,   c2008. 
 - xxii, 410 pages:   illustrations;  28 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>978-0-07-110194-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences
<br/><br/><label>Dewey Class. No.: </label>DC 363.7  / C91p