Sharma, P D <br/><br/>
Ecology and environment 
P. D. Sharma. 
 - 7th ed. 
 - Meerut  Rastogi  2005 
 - xv, 660p.: ill.; 22cm. 
<br/><br/><label>ISBN: </label>8171338143 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental science; Aquatic ecology. Ecology 
<br/><br/><label>Dewey Class. No.: </label>574.5  / S34E