Purbasari, Aprilina, Tjokorde Walmiki Samadhi, and Yazid Bindar. “ulfuric cid esistance of eopolymer ortars from o-ombustion esiduals of amboo and aolin”. ASEAN Journal of Chemical Engineering 18, no. 2 (December 31, 2018): 22-30. ccessed June 29, 2026. https://journal.ugm.ac.id/v3/AJChE/article/view/9021.