TY  - BOOK
AU  - Trivedi,P.R.
AU  - Raj,Gurdeep
TI  - Environmental ecology
SN  - 8171582435
AV  - QH545 .A1E58 1992
PY  - 1992///
CY  - New Delhi
PB  - Akashdeep Publishing House
KW  - Environment
KW  - Ecology
ER  -