1. Lime response of corn and beans grown on typical ultisols and oxisols of Puerto Rico;Abruna,1975
2. Differences in starch accumulation among dry bean cultivars;Adams;Crop. Sci.,1978
3. Evaluación del efecto simbiótico de 14 cepas de Rhizobium phaseoli en 3 variedades mejoradas de frijol negro de Guatemala;Aguilera,1974
4. Nutritional restraints on legume symbiosis;Andrew,1977
5. Legumes and acid soils;Andrew,1978