YUSTIANI, Y. M.; NUGROHO, F. L.; MURTADHO, F. Z.; DJAYADISASTRA, A. T. Applying Eco Enzyme to Reduce Chemical Oxygen Demand (COD) Content of Artificial River Water. Journal of Engineering and Technological Sciences, v. 55, n. 1, p. 91-97, 31 Mar. 2023.