Turk, Jonathan. <br/><br/>
Introduction to environmental studies  / 
Jonathan Turk. 
 - 3rd ed. 
 - Philadelphia :  Saunders College Pub.,   c1989. 
 - ix, 392 p. :  ill. (some col.) ;  26 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0030297990 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution--Environmental aspects<br/>Ecology
<br/><br/><label>LC Class. No.: </label>QH541