1. Anon., 1989. Mapa de Suelos de la Provincia de Buenos Aires. (Map of the soils of the Province of Buenos Aires). The Secretaria de Agricultura, Ganaderia y Pesca, INTA. Edipubli, Buenos Aires, Argentina
2. Brockwell, J., 1977. Application of legume seed inoculants. In: Hardy, R.W.F., Gibson, D.P.S. (Eds.), A Treatise on Dinitrogen Fixation. Academic Press, New York/London, pp. 277–308
3. Population dynamics of Rhizobium japonicum strains used to inoculate three successive crops of soybean;Brockwell;Australian J. Agri. Res.,1987
4. Host restriction of nodulation by Bradyrhizobium japonicum strain USDA 123 in soybean;Creagan;Crop Science,1986
5. Introduction and survival of inoculant strains of Rhizobium japonicum in soil;Dunigan;Agron. J.,1984