“Combined Microbial Inoculation As a Promising Approach to Enhance Promiscuous Soybean Nodulation and Nitrogen Content in Sudan Savanna”.
International Journal of Sustainable Agricultural Research, vol. 2, no. 3, Sept. 2015, pp. 86-97,
https://doi.org/10.18488/journal.70/2015.2.3/70.3.86.97.