Minja, Rwaichi J.A. 2020. “Practical Approach for Removal of Natural Organic Matter and Defluoridation of Maji Ya Chai River Water: Use of Acid Pre-Treated Bone Char and Coagulants”. Tanzania Journal of Engineering and Technology 38 (2). https://journals.udsm.ac.tz/index.php/tjet/article/view/3114.