TY  - BOOK
AU  - x, x
AU  - Trivedi,P.R
TI  - Concepts in environment: x
SN  - 8171582303
U1  - 628/C744 
PY  - 1992///
CY  - New Delhi
PB  - Akashdeep pub.
KW  - Environment
N1  - x
ER  -