Sharma, A. K., and P. N. Bhattacharyya. “Effect of Beneficial Microorganisms on Cowpea Productivity and Soil Health”. Journal of Advance Research in Pharmacy and Biological Science (ISSN 2208-2360) , vol. 2, no. 5, May 2016, pp. 11-15, https://doi.org/10.53555/nnpbs.v2i5.702.