Katyal, Timmy. <br/><br/>
Environmental Pollution /  
by Timmy Katyal; M. Satake. 
 - /  
 - New Delhi :   Anmol Publications ,   1990 
 - p302 :  
<br/><br/><label>ISBN: </label>81-7041-123-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water Pollution
<br/><br/><label>Dewey Class. No.: </label>G:55(D854)  / N0