TY  - BK
AU  - Tripp,R.B.
AU  - Tripp,R.B.
TI  - The limitations of on-farm research
U1  - 338.162 
PY  - 1991///
CY  - Chichester (United Kingdom)
PB  - John Wiley and Sons
KW  - Agricultural development
KW  - AGROVOC
KW  - Agricultural policies
KW  - Ecuador
KW  - Extension activities
KW  - Research
KW  - Small farms
KW  - Zea mays
KW  - Farming systems
N1  - References p. 255-256
ER  -