Kollie, William, and Ernest Semu. “Effects of Liming on Nodulation, Nitrogen Fixation and Seed Protein Content in Soybean”. East African Journal of Agriculture and Biotechnology 5, no. 1 (December 28, 2022): 266-276. Accessed April 28, 2024. https://journals.eanso.org/index.php/eajab/article/view/1029.