EKO SUPRIADI; AILSYA NADYA RIZKI. Influence Decrease in Chemical Oxygen Demand (COD) Against Biogas Quality and Production. International Journal of Mathematics and Science Education, [S. l.], v. 1, n. 4, p. 09–15, 2024. DOI: 10.62951/ijmse.v1i4.94. Disponível em: https://international.arimsi.or.id/index.php/IJMSE/article/view/94. Acesso em: 27 apr. 2025.