Gea, M. and Khaerudini, D.S. 2024. Two-stage Anaerobic Reactor Design of SS 316 Material with Application of Penetrant Test Method (NDT). Jurnal Teknik Mesin (Journal Of Mechanical Engineering). 13, 2 (Jun. 2024), 114–119. DOI:https://doi.org/10.22441/jtm.v13i2.27069.