TY  - BOOK
AU  - Katyal,Timmy
AU  - Sataka,M..
AU  - Kumar ,Raj
TI  - Environmental pollution / 
SN  - 8170411238
U1  - 363.73 
PY  - 1989///(rep1996)
CY  - New Delhi : 
PB  - Anmol Publications , 
KW  - ENVIRONMENTAL-POLLUTION
N1  - NULL
ER  -