The savannas of South America: towards a research agenda for CIAT: (summary of the rapid appraisals conducted in Brazil, Colombia and Venezuela, 1990-91)
Recolección de germoplasma de frijol Phaseolus spp. L. en la región andina (centro de Colombia), Cundinamarca y Boyacá
Proposal for an extension of the regional bean research network extension network for the Great Lakes region of Africa
Pilot development program of dual-purpose production systems in the Amazon foothills of Caqueta, Colombia