NADIARETA SITORUS; DESNIORITA DESNIORITA. Effect of pH on COD Reduction in Biogas Formation. International Journal of Science and Mathematics Education, [S. l.], v. 1, n. 4, p. 39–44, 2024. DOI: 10.62951/ijsme.v1i4.99. Disponível em: https://international.arimsi.or.id/index.php/IJSME/article/view/99. Acesso em: 19 may. 2025.