TY  - BOOK
AU  - Helmer,Richard
AU  - Hespunhol,Ivanildo
TI  - Water Pollution Control : A Guide to the use of water quality management principles
SN  - 0419229108
AV  - TD423 W324 1997
PY  - 1997///
CY  - London
PB  - Thomson Professional
KW  - Water pollution control
KW  - Water quality
ER  -