Revitalizing agricultural research in the Sahel : a proposed framework for action / Jan Weijenberg... [et al.]

Revitalizing agricultural research in the Sahel : a proposed framework for action / Jan Weijenberg... [et al.] . - Washington : The World Bank, 1993 . - XVII, 89 p., [1] mapa 28 cm . - (World Bank discussion papers; 211)
0-8213-2598-1 (Brochado)

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