“Effect of Washed and Unwashed CaCO3 Content on Concrete Compressive Strength at Mandangin Island Beach”. Jurnal Pendidikan Fisika dan Sains (JPFS) 6, no. 2 (September 30, 2023): 72-78. Accessed May 6, 2025. https://www.journal.unucirebon.ac.id/index.php/jpfs/article/view/472.