Hammer, Mark J. and Hammer, Mark J. <br/><br/>
Water and wastewater technology / 

 - 4th ed. 
 - New Delhi,  Prentice Hall,  c2006. 
 - vii, 536 p. ;  ill. ; 
<br/><br/><label>ISBN: </label>8120321081 
<br/><br/><label>Dewey Class. No.: </label>628.121