Hammer M.J. <br/><br/>
Water & waste water technology / 
Hammer M.J. 
 - 6th ed. 
 - New Delhi:  PHI learning,  2009. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9788120334 
<br/><br/><label>Dewey Class. No.: </label>628.1 HAM