TY  - BOOK
AU  -  Chhatwal,G R
TI  - Encyclopaedia of water pollution / 	
U1  - 363.7394603 
PY  - 1996///
CY  - New Delhi, India
PB  -  Anmol Publications, 
KW  - water pollution
N1  - Vol.  1-3
ER  -