"SINGH J S, SINGH S P & GUPTA S R" <br/><br/>
ECOLOGY ENVIRONMENT AND RESOURCE CONSERVATION 

 - 1 
 - DELHI  ANY BOOKS  2009 
 - XXVII+688 
<br/><br/><label>ISBN: </label>81-88342-55-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECOLOGY ENVIRONMENT AND RESOURCE CONSERVATION
<br/><br/><label>Dewey Class. No.: </label>577