TY  - BOOK
AU  - Trivedy, R k
TI  - Introduction to air pollution
U1  - 363.6 T739I(2) 
PY  - 2017///
CY  - Hyderabad
PB  - BS Publications
N1  - 2633 01/03/2017 RBP17/64177 09/03/2017 Environment DIST FIST
ER  -