TY  - BOOK
AU  - Trivedi, P R.
TI  - Encyclopedia of environment, Pollution, Planning and conservation. Vol-4/ (Acc: 1612)
SN  - 8176480045
U1  - 333.7 TRI 
PY  - 1998///
CY  - New Delhi.
PB  - A.P.H. Publishing Corporation.
ER  -