1. The legume/Rhizobium symbiosis. Limitations to maximizing nitrogen fixation;Atkins;Outlook on Agriculture,1986
2. Selection of Rhizobia for inoculants;Brockwell,1982
3. Plant beneficial bacteria;Davison;Biotechnology,1988
4. Improvement of symbiotic properties in Rhizobium leguminosarum by plasmid transfer;De Jong;J. Gen. Microbiol.,1982
5. Nif plasmid from Lignobacter;Derylo;Arch. Microbiol.,1981