La investigación a nivel de finca: caso del sistema de relevo maíz-frijol en San Vicente, Colombia, 1982-1987
Investigation of the importance of Neoseiulus idaeus and Typhlodromalus limonicus as natural enemies of the cassava green mite: final report: special project
Informe de viaje de observación a los países de Venezuela, Colombia, Ecuador, Panamá y Costa Rica, agosto 5-19, 1984
Industria artesanal de semillas de maíz y frijol para pequeños agricultores de zona fría y media de Colombia
Identification of tropical forage viruses: identification of viruses that hinder the evaluation, utilization, and international exchange of tropical forage germplasm
Identifying appropriate technologies for farmers: the case of the bean + maize system in Ipiales, Colombia, 1982-1986
Identificando tecnologías apropiadas para agricultores: caso del sistema frijol + maíz en Ipiales, Colombia, 1982-1986
Forages for soil improvement and animal feed supply: use of forage legumes in smallholder production systems for improving soil fertility, crop yields and animal production in the Andean hillsides