[1]
Ramadhy, W. 2020. Development of Mathematical Model to Determining the Quantity of Required Alum (Al2(SO4)3.14H2O) at the Regional Water Utility Company in Pontianak (PDAM Tirta Khatulistiwa). Journal of Science & Science Education. 4, 1 (Dec. 2020), 10 - 16. DOI:https://doi.org/https://doi.org/10.24246/josse.v4i1p10%20-%2016.