Punmia, B C, et. al. <br/><br/>
Waste water engineering : including air pollution 

 -   Laxmi Publications Pvt. Ltd.  2010 
 - 660 
<br/><br/><label>ISBN: </label>1960 
<br/><br/><label>Dewey Class. No.: </label>628.168  PUN-W