OPTIMIZATION OF POLY ALUMUNIUM CLORIDE (PAC) DOSAGE FOR TANNERY WASTE TREATMENT IN COAGULATION-FLOCULATION PROCESS. Settings Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit 2024, 22 (1), 16-22. https://doi.org/10.58533/cysq2360.