00894nam0-22002891i-450 99000175419040332120190529131354.0000175419FED01000175419(Aleph)000175419FED0100017541920030910d1991----km-y0itay50------baengDevelopment of sustainable agricultural production systems in AfricaBede N. OkigboIbadanInternational Institute of Tropical199166 p.25 cmAgricoltura tropicale634.6Okigbo,Bede N.76247ITUNINARICAUNIMARCLG99000175419040332160 OP. 144/137810FAGBC60 OP. 127/223260FAGBCFAGBCDevelopment of sustainable agricultural production systems in Africa363028UNINA