Parawansya, osyellah indar, and Safaruddin Safaruddin. “VERIFIKASI METODE PENENTUAN KADAR SO3 TERHADAP WAKTU PENGENDAPAN DALAM SEMEN DI PT. SEMEN BATURAJA”. DE FACTO: Journal of international multidisciplinary sciences 1, no. 02 (August 31, 2023): 96–105. Accessed May 1, 2026. https://azramedia-indonesia.azramediaindonesia.com/index.php/defacto/article/view/782.