Dewi, A. L., Tanjung, R. A., Tajalla, G. U. N., & Parmita, A. W. Y. P. (2024). The Characteristics of Polyester Concrete with Local Sand of East Borneo as Filter . Indonesian Applied Physics Letters, 5(1), 41–48. https://doi.org/10.20473/iapl.v5i1.58323