Agroforestry research in bean-based cropping systems of subsahalien Africa: A review of research methodologies and results
Research needs and methods for the use of fertilizers and soil amendments in bean-based cropping systems
Preliminary observations on the effect of competitive interference on stand maintenance of Stylosanthes capitata associated with Andropogon gayanus in the Eastern plains of Colombia
Selection of rhizobia for inoculation of forage legumes in savanna and rainforest soils of Tropical America