1. Characterization of rhizobia isolates from nodules on locally adapted Glycine max. grown in Nigeria;Bromfield;Annals of Applied Biology,1980
2. Comparison of nodulation promiscuity of USA and Asian type soyabean;Eaglesham;Tropical Agriculture (Trinidad),1985
3. Nitrogen Fixation in Tropical Cropping Systems;Giller,1991
4. Breeding soyabean for the tropics capable of nodulating effectively with indigenous Rhizobium spp;Kueneman;Plant and Soil,1984
5. Bradyrhizobium japonicum native to tropical soils: novel sources of strains for inoculants for US-type soyabeans;La Favre;Tropical Agriculture (Trinidad),1991