Okky Putri Prastuti (2026) “THE EFFECT OF REVERSE FLOTATION METHOD ON SILICA SAND AS WATERPROOFING MORTAR”, Jurnal Sains Materi Indonesia, 22(1), pp. 8–15. Available at: https://ejournal.brin.go.id/jsmi/article/view/5059 (Accessed: 26 October 2026).