TY  - BOOK
AU  - Trivedi, P.R.
AU  - Raj, Gurdeep
TI  - Encyclopaedia of Environmental Sciences :  Vol 7 Environmental Energy Resources
SN  - 8171582796
U1  - 304.203 
PY  - 1992///
CY  -  New Delhi
PB  - Akashdeep Publishing  House, 
KW  - Human Ecology
ER  -