1. Experimental Immunology;Burrell,1968
2. The presence and possible significance of cross-reactive antigens in Rhizobium-legume associations;Charudattan;Antonie van Leeuwenhoek,1973
3. Enhancement by cadmium of double-diffusion precipitin reactions;Crowle;J. Immun.,1958
4. Immunodiffusion;Crowle,1973
5. Serogroups of Rhizobium japonicum in soybean nodules as affected by soil types;Damiroi;Agron. J.,1967