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Book / Monograph Improved production of seed yam author(s) Otoo, J.A. - Okoli, O.O. - Ilona, Paul from International Institute of Tropical Agriculture (IITA) permalink open published in 2001 themes Nutrition and health Crops and technologies Social Inclusion regions Africa World Western Africa Sub-Saharan Africa citation Otoo, J.A., Okoli, O.O. & Ilona, P. (2001). Improved production of seed yam. IITA Research Guide, 63, Ibadan, Nigeria: IITA, (p. 21). Publications and datasets provided via GARDIAN Open original