. R, W Alisjahbana S, Riyanto H, Hasyim C, Ikhsan Setiawan M, Harmanto D, et al. Substitution Local Resources Basalt Stone Scoria Lampung, Indonesia, as a Third Raw Material Aggregate to Increase The Quality of Portland Composite Cement (PCC). IJET [Internet]. 2018 Apr. 8 [cited 2024 Nov. 22];7(2):484-90. Available from: https://sciencepubco.com/index.php/ijet/article/view/11252