Sethi, Purnima <br/><br/>
Environmental pollution and control / 
Purnima Sethi 
 - New Delhi :  Alfa Publications,  2011 
<br/><br/>Includes references & index. 
<br/><br/><label>ISBN: </label>9789380937090 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental control
<br/><br/><label>Dewey Class. No.: </label>628  / SET