TY  - GEN
AU  - Haslam , S.M.
TI  - River pollution: an ecological perspective
SN  - 8123900201
U1  - 363.73 
PY  - 1990///
CY  - Delhi
PB  - CBS Publishers
KW  - ENVIRONMENTAL POLLUTION
KW  - SOCIAL PROBLEMS
KW  - POLLUTION-RIVER
ER  -