Mbaka, F. K., H. O. Ndukhu, and G. O. Oloo-Abucheli. “Response of Soil Chemical Properties to Rhizobium and Rock Phosphate Fertilizer Application under Green - Grams in Tharaka Nithi County, Kenya”. Asian Journal of Soil Science and Plant Nutrition, Vol. 6, no. 4, Dec. 2020, pp. 43-52, doi:10.9734/ajsspn/2020/v6i430099.