Nasarudin, F.M. et al. 2020. Intelligent Clasification Sewage Treatment Plant (STP) Using E-Nose. Mekatronika: Journal of Intelligent Manufacturing and Mechatronics. 2, 1 (Jun. 2020), 79–88. DOI:https://doi.org/10.15282/mekatronika.v2i1.6746.