Factors Affecting the Adoption of Forage Technologies under Smallholder Dairy Production Systems in Tanzania
Oryzica sabana 6 : variedad mejorada de arroz para sistemas sostenibles de producción en suelos de sabana
Series estadisticas de precios promedios corrientes de frijol a nivel de consumidor en Cali y Palmira Valle del Cauca. Periodo 1977- 1989
Hen manure as a fertilizer for common beans (Phaseolus vulgaris L.). Its costs and efficiency compared with those of a chemical fertilizer and a comparison of two common methods of applying hen manure & seeding bean seeds
