Sharma P. D. <br/><br/>
Ecology and environment 

 - Meerut  Rastogi Publications India        2001 
 - 659p.  cm. 
<br/><br/><label>ISBN: </label>8171335284 
<br/><br/><label>Standard No.: </label>40986 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BIOLOGY
<br/><br/><label>Dewey Class. No.: </label>G:5, P1;2