Standard methods for the examination of water and wastewater 

 - 21 
 -  American Public Health Association Inc., New York  2005 
 - I-55 
<br/><br/><label>ISBN: </label>0875530478 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water supply-Technology
<br/><br/><label>Dewey Class. No.: </label>R 628.1  STA21