TY  - BOOK
AU  - Chhatwal, G. R.,
TI  - Environmental air pollution and its control
SN  - 8170412137
U1  - 363.7392 
PY  - 1989///
CY  - New Delhi : 
PB  - Anmol Publications, 
KW  - Air
KW  - Pollution.
KW  - Air quality management
ER  -