Ashworth, William <br/><br/>
VIVA facts on file encyclopedia of Environmental Studies / 
Ashworth, William. 
 - New Delhi:  Viva books,  2006. 
 - viii, 600p.;29cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9788130902364 
<br/><br/><label>Dewey Class. No.: </label>333.703 ASH