ASTHANA, D.K. <br/><br/>
TEXTBOOK OF ENVIRONMENTAL STUDIES 

 - NEW DELHI  S. Chand Publishing  2006 
 - xvii+460p.,24x17Cms. 
<br/><br/><label>ISBN: </label>8121927641 
<br/><br/><label>Dewey Class. No.: </label>628.8 A852