American Water Works Association <br/><br/>
Water quality and treatment 

 - 2nd ed. 
 - New York  American Water Works Association  1951 
 - 451p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Water quality and treatment
<br/><br/><label>Dewey Class. No.: </label>628.16  / A45W