Nutrient removalWEF manual of practice no. 34 
by Water Environment Federation. 
 - New York, N.Y.  McGraw-Hill Education,  2011 
<br/><br/><label>ISBN: </label>9780071737098 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage Sewage Sewage Sewage Water Microbial ecology.