Torpical tuber crops : Yams, cassava,sweet potato and cocoyams - I.C. Onwueme (Chichester John Wiley and Sons, 1978)
I.C. Onwueme: Torpical tuber crops : Yams, cassava,sweet potato and cocoyams. Chichester. John Wiley and Sons, 1978. 0-471-99607-6--(635.2ONW)
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