Sharma, P. D. <br/><br/>
Environmental biology 
P. D. Sharma 
 - Meerut  Rastogi publications  1999 
 - 409p.  23cm. 
<br/><br/><label>ISBN: </label>8171334040  85 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology<br/>Environmental biology
<br/><br/><label>Dewey Class. No.: </label>577  / SHA