Hartley, Ken. <br/><br/>
Tuning biological nutrient removal plants / 
Ken Hartley. 
 - London :  IWA Publishing,  2013. 
 - x, 246 pages :  illustrations ;  25 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781780404820 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Nutrient removal.