The Nalco water handbook 
Nalco Company ; Daniel J. Flynn, editor. 
 - 3rd ed. 
 - New York :  McGraw-Hill,  c2009. 
 - P-43-16  Illus 
<br/><br/>
<br/><br/><label>ISBN: </label>0071548831 (hbk.) 9780071548830 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Factory and trade waste--Purification.<br/>MCE<br/>Sewage--Purification.<br/>Water use.<br/>Water--Purification.
<br/><br/><label>Dewey Class. No.: </label>546.22  / NAL