TY  - GEN
AU  - Trivedi, P. R.
TI  - Environmental problems: impact assessment 
SN  - 8171582249
U1  - 628.16 
PY  - 1992///
CY  - New Delhi
PB  - Akashdeep Publishing House
KW  - Environmental problems
N1  - Includes references & indexes
ER  -