Sharma, P.D. <br/><br/>
Ecology and environment / 
Sharma, P.D. 
 -  Rastogi Publications, Meerut. 
 - 660p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Dewey Class. No.: </label>574.5  / SHAE