Juliani, Rita, Timbangen Sembiring, Mester Sitepu, and . Motlan. “Geophysical Study for Discovering The Missing of Lau Ketuken from The Surface at Sulkam Village”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 22, no. 1 (May 17, 2015): 360–366. Accessed January 16, 2026. https://gssrr.org/JournalOfBasicAndApplied/article/view/4020.