TY  - BOOK
AU  - Trivedi, P.R..
TI  - Encyclopaedia of Environment, Pollution, Planning And Conservation : Environmental Education Vol-5 / 
SN  - 81-7648-005-3
U1  - G:55K 
PY  - 1985///
CY  - New Delhi : 
PB  - APH Publishing Corporation , 
KW  - Encyclopaedia
ER  -