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 6, no. 4 (December 12, 2020): 43-52. Accessed February 26, 2021. https://journalajsspn.com/index.php/AJSSPN/article/view/30099.