Sharma, P D. <br/><br/>
Ecology and environment /  
by P.D. Sharma. 
 - 7th ed /   . 
 - Meerut :   Rastogi Publications ,   2004. 
 - xv,660p. :   ill.,figs.,charts,tables ;   22cm .  
<br/><br/>Includes bibliography and index 
<br/><br/><label>ISBN: </label>817133704X  Rs.180.00 
<br/><br/><label>Subjects--Index Terms: </label>ECOLOGY 
<br/><br/><label>Dewey Class. No.: </label>577  / SHA/E