Amin, Muhammad, David Candra Birawidha, Kusno Isnugroho, Yusup Hendronursito, Slamet Sumardi, Septa Ario, Syafriadi Syafriadi, and Muhammad Al-Muttaqii. 2019. “THE INFLUENCE OF BASALT MINERALS AS CEMENT SUBSTITUTION MATERIALS IN MORTAR”. Acta Polytechnica 59 (6):536-42. https://doi.org/10.14311/AP.2019.59.0536.