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URI permanente para esta comunidadhttp://hdl.handle.net/123456789/2
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Ítem Differential species and varietal tolerance to soil acidity in tropical crops and pastures(North Carolina State University) Spain, James M.; Francis, C.A.; Howeler, Reinhardt H.; Calvo, FAÍtem Efficiency of energy use in producing maize with different technologies(International Center for Tropical Agriculture) Heichel, GH; Francis, C.A.Ítem A comparison of vitreous and soft endosperm high-lysine and common maize in diets for growing rats and pigsGómez G., Guillermo G.; Maner, JH; Flores, Z; Francis, C.A.