TY  - GEN
AU  - Ehui, Simeon K.
AU  - Spencer, Dunstan S.C.
TI  - Indices for measuring the sustainability and economic viability of farming systems
PY  - 1991///
CY  - Ibadan
PB  - International Institute of Tropical Agriculture
KW  - Agricultural Productivity
KW  - Sustainable Agricultural
KW  - Africa
KW  - Economic Model
KW  - Measurement
ER  -