P D SHARMA <br/><br/>
ECOLOGY AND ENVIRONMENT 

 - MEERUT  RASTOGI PUBLICATIONS  2013 
 - 643  ill. Some colour  24 CM 
<br/><br/><label>ISBN: </label>978-81-7133-965-5 
<br/><br/><label>Dewey Class. No.: </label>574.5  / SHA