Turk, Jonathan <br/><br/>
Introduction to environmental studies 
Jonathan Turk 
 - 2nd.edition 
 - Philadelphia  Saunders College Publishing  1985 
 - 330p. 25cm. 
<br/><br/><label>ISBN: </label>0030642337 
<br/><br/><label>LCCN: </label>84-10332 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Pollution--Environmental aspects