TY  - BOOK
AU  - Helmer, Richard
AU  - Hespanthol, Ivanildo
TI  - Water Pollution Control
SN  - 0419229108
U1  - 363.73946 
PY  - 1997///
CY  - London
PB  - E and FN Spon
KW  - Social problems and services
KW  - Social sciences
KW  - Control
KW  - Water pollution
ER  -