Alternative seed provision in Zambia: Integrating formal and informal activities

certification des semences commercialisation development projects economic value evaluation financement financial policies financiamiento financing grain legumes industria de semillas industrie des semences leguminosas de grano loans marketing mercadeo nongovernmental organizations organisation non gouvernementale organizaciones no gubernamentales papa petite entreprise petite exploitation agricole policies politique pomme de terre potatoes production de semences profitability proyectos de desarrollo rentabilidad seed seed certification seed industry seed production semence semillas small enterprises small farms variedades varieties zambia zambie