1. Cultures of Rhizobium inoculants with those of Beijerinckia and Azotobacter;Apte;Proceedings of Indian National Science Academy.,1971
2. Enhanced nodulation of leguminous plant roots by mixed cultures of Azotobacter vinelandii and Rhizobium;Burns;Plant and Soil.,1981
3. The acetylene reduction method for measuring biological nitrogen fixation;Diloworth;Rhizobium Newsletter,1970
4. Effect of certain nitrogen compounds on growth nodulation and nitrogen fixation in Sesbania sesban plants (L.) Merrill inoculated with Parent R. Sesbani;El-Gamal;Annals Agric. Sci. Fac. Agric., Ain Shams UNiv., Cairo. Egypt.,1985
5. Effect of Bacterization of Maize (Zea mays L.) seedlings with Azotobacter chroococcum on their growth;El-Hoseiny;Egypt. J. Microbiol.,1979