Biological nutrient removal (BNR) operation in wastewater treatment plants / 
prepared by the Biological Nutrient Removal (BNR) Operation in Wastewater Treatment Plants Task Force of the Water Environment Federation and the American Society of Civil Engineers/Environmental and Water Resources Institute. 
 - New York :  McGraw-Hill,  c2006. 
 - xliv, 597 p. :  ill. ;  25 cm. 
 - ASCE/EWRI manuals and reports on engineering practice ;  no. 109 WEF manual of practice ;  no. 29 .
 - ASCE manuals and reports on engineering practice ;  no. 109 Manual of practice ;  no. 29. .
<br/><br/> "Manual of practice no. 30"--Cover.  Fakulti Agro Industri dan Sumber Asli  Includes index. 
<br/><br/><label>ISBN: </label>0071464158 9780071464154 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Nutrient removal.