TY  - BOOK
AU  - Purohit S S
AU  - Saxena M M 
TI  - Water ,life and pollution
SN  - 818503141 - X
U1  - 628.168 
PY  - 1990///
CY  - Bikaner
PB  - Agro botanical publishers
KW  - The water
KW  - Waste water treatment
KW  - Water pollution
ER  -