Joshi, S., & Adhikari Pradhananga, M. (2017). Removal of Fluoride Ions by Adsorption onto Fe<sub>2</sub>O<sub>3</sub> /Areca Nut Activated Carbon Composite. Journal of the Institute of Engineering, 12(1), 175–183. https://doi.org/10.3126/jie.v12i1.16901