TY  - BOOK
AU  - P.R. Trivedi
AU  -  Gurdeep Raj, 
TI  - Environmental Air pollution
SN  - 81-7158-242-7
U1  - 363.7392 
PY  - 1992///
CY  - New Delhi
PB  - Akashdeep Publishing House
N1  - P.R. Trivedi & Gurdeep Raj: Environmental Air pollution.  New Delhi.  Akashdeep Publishing House, 1992. 81-7158-242-7--(363.7392TRI)
ER  -