TY  - BOOK
AU  - 
AU  - 
TI  - Biological nutrient removal (BNR) operation in wastewater treatment plants: WEF manual of practice no.29
SN  - 0-07-146415-8
U1  - 628.387 
PY  - 2006///
CY  - New York
PB  - Mc Graw hill
KW  - Wastewater treatment
KW  - Biological nutrient removal
KW  - Sewage- purification- nutrient removal
ER  -