Sharma, P D <br/><br/>
Environmental Biology / 
P D Sharma 
 - Meerut:  Rasthogi Publications,  2002. 
 - 416p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Dewey Class. No.: </label>574.5  / SHA/E