Sharma, P.D.  x <br/><br/>
Environmental biology  x 

 - 2nd 
 - Meerut  Rastogi pub  1993 
 - x, 416 
<br/><br/>Includes 
<br/><br/><label>ISBN: </label>8171334040 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental biology Biology 
<br/><br/><label>Dewey Class. No.: </label>577/S531e