Agroforestry research in bean-based cropping systems of subsahalien Africa: A review of research methodologies and results
Respuesta al fosforo aplicado a dos profundidades y su efecto en el rendimiento del frijol (Phaseolus vulgaris L.)
Cassava micro-regions in part of eastern Paraguay : An explanation of their form and comparative study of cassava production within some of them
Research needs and methods for the use of fertilizers and soil amendments in bean-based cropping systems
Workshop on Soil Fertility Research for Bean Cropping Systems in Africa (1988, Addis Ababa, Ethiopia). Proceedings
La investigacion en campos de agricultores sobre frijol en la Fraylesca, Chiapas, Mexico:Avances del proyecto La Fraylesca
