TY  - BOOK
AU  - Chhatwal, G.R. and others
TI  - Encyclopedia of environmental pollution and its control: water pollution
SN  - 8170412455
U1  - 363.7303 
PY  - 1989///
CY  - New Delhi
PB  - Anmol publications
KW  - Encyclopaedia
KW  - Environmental pollution-encyclopaedia
ER  -