1. Determination and isotope-ratio analysis of different forms of nitrogen in soils: 3. Exchangeable ammonium, nitrate, and nitrite by extraction-distillation methods;Bremner,1966
2. Population dynamics of Rhizobium japonicum strains used to inoculate three successive crops of soybean;Brockwell;Australian Journal of Agricultural Research,1987
3. Effects of soil nitrogen status and rate of inoculation on the establishment of populations of Bradyrhizobium japonicum and on the nodulation of soybeans;Brockwell;Australian Journal of Agricultural Research,1989
4. Rhizosphere populations of Rhizobium strains and nodulation of Leucaena leucocephala;Bushby;Australian Journal of Experimental Agriculture,1982
5. Biology;Bushby,1982