TY  - BOOK
AU  - Chhatwal, G. R., ed.
TI  - Encyclopaedia of environmental air pollution
SN  - 81-7488-438-6
U1  - 628.5303 
PY  - 2003///
CY  - New Delhi
PB  - Anmol
KW  - Air pollution- Encyclopadia
KW  - Environmental- Encyclopedia
KW  - Natural resource
N1  - UBH
ER  -