Omotayo, A. E.; Ajayi, A.; Amund, O. O. Occurrence of Hydrocarbon-Degrading Nitrogen-Fixing Bacteria in the Rhizosphere of Paspalum Vaginatum Sw.: Hydrocarbon-Degrading Nitrogen-Fixing Bacteria. J. BioSci. Biotechnol. 2018, 6, 119-127.