TY  - BOOK
AU  - Sethi, M S
TI  - Global air pollution: problems for the future
SN  - 8171692206
U1  - 363.7392 N21 
PY  - 1992///
CY  - New Delhi
PB  - Commonwealth Publishers
KW  - Air pollution
KW  - Envrionmental protection
ER  -