TY  - BOOK
AU  - Gray,N.F.
TI  - Water technology: an introduction for scientists and engineers 
SN  - 0340676450 (pbk.)
PY  - 1999///
CY  - London, New York
PB  - Arnold, Wiley
KW  - Water quality management
KW  - Sewage disposal
KW  - Freshwater biology
KW  - Water quality biological assessment
KW  - Water-supply
KW  - Aquatic biology
KW  - Water-supply engineering
N1  - Includes index; Includes bibliographical references
ER  -