TY  - BOOK
AU  - Gray,N.F.
TI  - Water technology: an introduction for environmental scientists and engineers
SN  - 8176491535 :
U1  - 628.1 
PY  - 2000///
CY  - New Delhi
PB  - Viva Books Private
KW  - Water quality management
KW  - Sewage disposal
KW  - Freshwater biology
KW  - Water quality biological assessment
KW  - Water-supply
ER  -