Aditama, W., Sofia, S., Junaidi, J., & Zulfikar, Z. (2022). Optimization of the Use of Chinese Teak Seed Powder Coagulant (Cassia angustifolia) as a Natural Coagulant in Reducing Turbidity of Dug Well Water Using the Jar Test Method. Open Access Macedonian Journal of Medical Sciences, 10(E), 662–666. https://doi.org/10.3889/oamjms.2022.8815