TY  - BOOK
AU  - Srivastava, Yogendra N. 
TI  - Environmental pollution / 
SN  - 817024210x
U1  - 628.5 SRI  23
PY  - 1997///
CY  - New Delhi : 
PB  - APH Pub., 
KW  -  Air
KW  - Pollution.
KW  - Pollution
ER  -