TY  - BOOK
AU  - Helmer,Richard
AU  - Hespanhol,Ivanildo
TI  - Water Pollution Control :A Guide To the Use of Water Quality Management Principles
SN  - 0419229108 (paperback)
U1  - 363.7394HEL 
PY  - 1997///
CY  - London
PB  - E and FN Spon
KW  - Water--Purification
KW  - Water--Pollution
KW  - Water quality management
UR  - http://10.10.170.122:8080/browse/book/24089
ER  -