Sharma, P.D., <br/><br/>
Ecology and Environment /  Textual Documents 
P.D. Sharma. 
 - 7th ed. / 
 - Meerut :  Rastogi Piblications ,  1998. 
 - xv, 660p. :  ill ;  23cm. . 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>81-7133-380-X 
<br/><br/><label>Subjects--Index Terms: </label>Ecology and Environmen G-Botany Environment-Botany PG - Batany 
<br/><br/><label>Dewey Class. No.: </label>581.5