TY  - BOOK
TI  - Environmental control and public health: water
SN  - 0749261722
PY  - 1992///
CY  - Milton Keynes 
PB  - The Open University
KW  - Water quality
KW  - Hydrology
KW  - Water
KW  -  Pollution
N1  - Units 5-6 Water quality, analysis and management
ER  -