Sharma, P. D. <br/><br/>
Elements of ecology / 
P. D. Sharma. 
 - 4th ed. 
 - Merrut, India :  Rastogi Publications,  c 1981. 
 - xvi, 373 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>310  310 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.
<br/><br/><label>Dewey Class. No.: </label>581.5 / P1e