Katyal,Timmy. <br/><br/>
Environmental Pollution / 
Timmy Katyal. 
 - New Delhi:  APL,  c 2006. 
 - x,302p.:  illus,table,figs.  22cm. 
<br/><br/>
<br/><br/><br/>English. 
<br/><br/><label>ISBN: </label>8170411238 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Pollution.
<br/><br/><label>Dewey Class. No.: </label>628.5/KAE