TY  - BOOK
ED  - Trivedi,P.R
ED  - Raj,Gurdeep
TI  - Environmental ecology
SN  - 8171582435
U1  - 333.7 
PY  - 1992///
CY  - New Delhi
PB  - Akashdeep Publishing House
KW  - Ecology
KW  - Pollution
KW  - Environment
KW  - Conservation of Natural Resources
ER  -