TY  - BOOK
AU  - Haslam,S.M..
AU  - Bower,Y..
TI  - River pollution : an ecological perspective / 
SN  - 8123900201
U1  - 577.627 
PY  - 1990///(rep.1991)
CY  - New Delhi : 
PB  - C B S Publishers and Distributors , 
KW  - ECOLOGY
N1  - NULL
ER  -