Okigbo, B.N.
Development of sustainable agricultural production systems in africa: Role of international agricultural research centers and national agricultural reseach systems/by print resource Bede N. Okigbo. - Ibadan-Nigeria: International institute of tropical agriculture (IITA), 1991. - ii, 66p.: ill.; 25cm.
includes bibliography
B-12269
--Book
SB111 / .O44 1991
Development of sustainable agricultural production systems in africa: Role of international agricultural research centers and national agricultural reseach systems/by print resource Bede N. Okigbo. - Ibadan-Nigeria: International institute of tropical agriculture (IITA), 1991. - ii, 66p.: ill.; 25cm.
includes bibliography
B-12269
--Book
SB111 / .O44 1991