TY  - BOOK
ED  - Water Environment Federation
ED  - American Society of Civil Engineers.
TI  - Biological nutrient removal (BNR) operation in wastewater treatment plants
T2  - WEF manual of practice
SN  - 0071464158
U1  - 628.3 
PY  - 2006///
CY  - New York
PB  - McGraw Hill
KW  - Aguas residuales
KW  - Purificacion
ER  -