Simanullang, Samuel Putra, Moh. Afandy, and Fikrah Dian Sawali. 2024. “Effectiveness of the Combination of Alum (Al₂(SO₄)₃) and Calcium Hydroxide (Ca(OH)₂) Coagulants in the Removal of Manganese (Mn) Using the Coagulation-Flocculation Process”. Stannum : Jurnal Sains Dan Terapan Kimia 6 (2), 71-78. https://doi.org/10.33019/jstk.v6i2.4301.