Sharma, P. D. <br/><br/>
Ecology and environment / 
Sharma, P. D. 
 - 6th ed. 
 - xv, 519 p. : ill. ; 22 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>8171331831 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.
<br/><br/><label>Dewey Class. No.: </label>577