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CORAF initiative. Strengthening research-extension-farmers'organisation linkages in West and Central Africa. Supplementary field study : Nigeria. Akinwunmi J.A.. 1999. Abidjan : CORAF, 60 p.

Selective mechanization for cassava processing. Igbeka J.C., Jory Michel, Griffon Dany. 1992. AMA - Agricultural Mechanization in Asia, Africa and Latin America, 23 (1) : 45-50.