AMERICAN WATER WORKS ASSOCIATION <br/><br/>
PROCEEDINGS:AMERICAN WATER WORKS ASSOCIATION:DEDICATED TO SAFE DRINKING WATER,19 

 - DENVER  Awwa Research Foundation  1996 
 - x+767p.,22x14cms. 
<br/><br/><label>ISBN: </label>0-89867-879-X 
<br/><br/><label>Dewey Class. No.: </label>627.48 A512.1-.5