TY  - GEN
AU  - Hammer, Mark J.
AU  - Hammer, Mark J.
TI  - Water and wastewater technology 
SN  - 9788120346017
U1  - 628.1 
PY  - 2013///
CY  - New Delhi
PB  - PHI Learning
KW  - Water-supply engineering
KW  - Sewage disposal
ER  -