Home Publications & Data Conference Paper Returns to agricultural research in Colombia author(s) Ardila Vásquez, J published in1975 regions Colombia original file download full citation Ardila Vásquez, Jorge; Hertford, Reed; Rocha, Andrés; Trujillo, Carlos. 1975. Returns to agricultural research in Colombia. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. 65 p.