R C Sharma <br/><br/>
Environmental Studies 

 - Ludhiana  Kalyani Publishers  2008 
 - 278 p. 
<br/><br/><label>ISBN: </label> 95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>337 SHA