1. Plant growth promotion by Azotobacter paspali in the rhizosphere;Abbas;Soil Biol. Biochem.,1993
2. Establishment of A. chroococcum on roots of crop plants;Apte;Zbl. Bakt. II,1981
3. Effect of azotobacterin on the vulnerability of farm plants to bacterial diseases;Beltyukova,1953
4. Nature of action of azotogen;Berezoa;Dokl. An SSSR.,1938
5. Production of plant growth substances by A. chroococcum;Brown;J. Gen Microbiol.,1968