TY  - BOOK
AU  - Tripathi,A.K.
TI  - Air pollution: Protect global earth series 
SN  - 8170245214
AV  - QH505 .M58 2013
U1  - 363.7 23
PY  - 1993///
CY  - New Delhi
PB  - Ashish Pub. House, 
KW  - The Nature of Air Pollution
ER  -