Ritter, Joseph A. <br/><br/>
Water quality / 
Joseph A. Ritter 
 - 4th ed. 
 - Denver, Colorado :  American Water Works Association,  c2010 
 - xll 213 p. :  ill. ;  27 cm. 
 - Principles and practices of water supply operations .
 - Principles and practices of water supply operations .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781583217801 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality<br/>Water quality--Measurement