TY  - BOOK
ED  - Water Environment Federation.
ED  - Environmental and Water Resources Institute (U.S.)
TI  - Biological nutrient removal (BNR) operation in wastewater treatment plants
SN  - 0071464158 :
U1  - 628.357 
PY  - 2006///
CY  - New York
PB  - McGraw-Hill
KW  - Sewage
KW  - Purification
KW  - Nutrient removal
N1  - "Manual of practice no. 30"--Cover; Includes bibliographical references and index
ER  -