TY  - BOOK
AU  - Ranaweera, N.F.C
TI  - Changing agricultural opportunities: the role of farming systems approaches
SN  - 9558219002
U1  - 630 
PY  - 0000///Asian Farming System Association
CY  - Sri Lanka
PB  - 1998
KW  - Agriculture--Farming system
ER  -