Maharjan R, Amatya IM, Sharma RK. Comparative Analysis of Hydrogenotrophic Denitrification in up and down Flow Reactors. J. Inst. Engineering [Internet]. 2019 Jul. 31 [cited 2024 Aug. 16];15(2):87-91. Available from: https://nepjol.info/index.php/JIE/article/view/27646