Punmia, B.C.  <br/><br/>
Wastewater Engineering: Including Air Pollution 

 - 2nd 
 - New Delhi  Laxmi Publications  2009 
 - 660p. 
<br/><br/><label>ISBN: </label>9788131805961 
<br/><br/><label>Dewey Class. No.: </label>628  / PUN-W