Joshi S. Comparative Study on the Adsorption Capacity of Activated Carbon Prepared from Lapsi Seed Stone and Betel nut using Phosphoric Acid. J. Inst. Engineering [Internet]. 2018 Jun. 22 [cited 2024 Nov. 22];13(1):153-9. Available from: https://nepjol.info/index.php/JIE/article/view/20361