Sapkota P, Poudel L. Heat Exchanger for Bio-Digester under Thermophilic Range. J. Adv. Coll. Engin. Mgt. [Internet]. 2019 Dec. 13 [cited 2024 Aug. 17];5:79-88. Available from: https://nepjol.info/index.php/JACEM/article/view/26691