TY  - BOOK
AU  - Katyal, Timmy, Satake, M. and Kumar, Raj
TI  - Environmental pollution
SN  - 8170411238
U1  - 363.73 
PY  - 1989///
CY  - New Delhi
PB  - ; Anmol Publications
KW  - Environmental Pollution
KW  - Environmental Problems
ER  -