1. Seed systems in Sub-Saharan Africa by Venkatesan, V. Publication: Washington The World Bank 1994 . 112 p. , Biblioteca do Banco Mundial Date:1994 Availability: No items available:

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2. Evolution of agricultural services in Sub-Saharan Africa : by Venkatesan, V. Publication: Washington : The World Bank, 1998 . XI, 117 p. Date:1998 Availability: No items available:

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