The relative evaluation system: A quantitative technique for disease assessment of rice breeding materials in the field
Negative selection in breeding for quantitative resistance to rice blast (Bl) under upland nursery conditions
Efecto de la asociacion maiz-frijol sobre poblaciones de insectos plagas, con enfasis en Empoasca kraemeri Ross & Moore
Evaluacion de la asociacion de dos ciclos vegetativos de frijol (Phaseolus vulgaris L.) con uno de maiz (Zea mays L.)
Food consumption patterns in Colombia--a cross-sectional analysis of the DANE/DRI 1981 household survey