Fransisco, Vicky, and Firdaus Firdaus. “The Effect of Fineness of Segabai Rice Husk Ash PCC Cement Substitution in Concecrete Making ”. ARRUS Journal of Engineering and Technology 5, no. 1 (June 10, 2025): 1–10. Accessed June 1, 2026. https://qemsjournal.org/index.php/jetech/article/view/3690.