TY  - BOOK
AU  - Hammer, Mark J.
TI  - Water and wastewater technology
SN  - 978 81 203 3499 1
U1  - 628.1 
PY  - 2008///
CY  - New Delhi
PB  - P H I 
KW  - Sewage disposal
KW  - Waste water engineering
KW  - Sewage purification
ER  -