Comparación del porcentaje de vectores virulíferos (Tagosodes orizicolus) (Muir) [Homóptera: Delphacidae]) en el campo con el porcentaje de insectos con capacidad genética de transmitir el virus de la hoja blanca en zonas arroceras de Colombia
Diseño, construcción y uso de un microrelievímetro para evaluar la dinámica de la erosión en áreas de ladera
The earthworms community of Carimagua (Eastern plains, Colombia) : taxonomy and ecology of species. Looking forward to a sustainable way of land management?
Report on evaluation of cassava varieties by farmers in Colombia : interviews conducted with farmers during February, 1987 in the North Coast region
Cassava development : pilot project in Ceará, northeast Brazil: integrated production, processing and commercialization of dry cassava chips for animal consumption March 1989 - June 1992: final report
