TY  - BK
AU  - Okigbo,B.N.
TI  - Development of sustainable agricultural production systems in Africa:  Roles of International Agricultural Research Centers and National Agricultural Research Systems
PY  - 1991///
PB  - Ibadan, NG; IITA, 
KW  - Africa
KW  - Agricultural development
KW  - AGROVOC
KW  - Agricultural policies
KW  - Development aid
KW  - International organizations
KW  - Research
KW  - Support measures
KW  - Technical aid
KW  - Research institutions
ER  -