Thorpe, Gary S <br/><br/>
AP Environmental Science (4th ed)/ 
Gary S Thorpe 
 - 4th Edition 
 - Hauppauge, New York :  Barron's Educational Series ,  2011 
 - iv,539pages :  illustrations,maps   28cm 
<br/><br/><label>ISBN: </label>9780764145711 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences --Examinations--Study Guides<br/>Advanced placement programs (Education)--Examinations--Study Guides