Preliminary assessment of the marketing sytsems for yam in Ghana. Ligname, plante seculaire et culture d'avenir, Actes du seminaire international, Montpeller, France. CIRAD-INRA-ORSTOM-CORAF. 3-6 June 1997
author(s)
Westby, A..
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Crentsil, D..
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Bancroft, R.
fromUK Foreign, Commonwealth & Development Office (FCDO)