TY  - BOOK
AU  - Chitkara, M.G.
TI  - Encyclopaedia of Ecology,Environment and Pollution. Vol.4 
SN  - 81-7024-880-9
U1  - 333.703 
PY  - 1998///
CY  - Delhi
PB  - Aph pub.
KW  - Land Economics
KW  - Economics
ER  -