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

 - 6 
 -  Rastogi & Co., Meerut  1995 
 - 512 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology; Biology
<br/><br/><label>Dewey Class. No.: </label>PG 574.5  SHA-E6