TY  - BOOK
AU  - Gurdeep Raj (jt. ed)
AU  - P R Trivedi (jt. ed)
TI  - Environmental air pollution
U1  - 363.7392 
PY  - 1992///
CY  - New Delhi
PB  - Akasdeep
KW  - Pollution-Environmental aspects
KW  - Air-Pollution
ER  -