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Dialogue and training for the promotion of root, tuber and legume crops in Africa - West African region : proceedings of the conference held from 14 to 18 October, 1991 in Accra, Ghana / rapporteur Alois Basler ; ed. Engelbert Veelbehr.
- Zentralstelle für Ernährung und Landwirtschaft,
- 1991.
- Feldafing :