Sperling, Louise; Scheidegger, Urs C.; Buruchara, Robin A. 1994. Designing seed systems for smallholder farmers: Principles derived from bean research in the Great Lakes region of Africa. In: David, Soniia (ed.). Alternative approaches to bean seed production and distribution in Eastern and Southern Africa: Proceedings of a working group meeting, Kampala, Uganda, 10-13 October 1994. Centro Internacional de Agricultura Tropical (CIAT), Network on Bean Research in Africa, Kampala, UG. p. 64-77. (CIAT African workshop series no. 32)

phaseolus vulgaris; seed production; economic distribution; seed; quality; production costs; producción de semillas; distribución económica; semillas; calidad; costos de producción