Dewi, A. L., Tanjung, R. A., Tajalla, G. U. N. and 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), pp. 41–48. doi: 10.20473/iapl.v5i1.58323.