Pangabean, J. H., Hutahaean, J., Sihombing, L. W., Doloksaribu, M. E., & Rajagukguk, J. (2025). EXPERIMENTAL STUDY OF BORATE-BASED GLASS MEDIUM MATERIAL AND HUTA GINJANG QUARTZ SAND THROUGH MELT-QUENCHING TECHNIQUE. EINSTEIN (e-Journal), 13(1), 42–48. https://doi.org/10.24114/eins.v13i1.64965