“IDENTIFIKASI LAPISAN PENYEBAB LONGSOR MENGGUNAKAN GROUND PENETRATING RADAR AREA MONUMEN PESAWAT SANGATTA PT. KALTIM PRIMA COAL”. GEOSAINS KUTAI BASIN 3, no. 2 (August 28, 2020). Accessed September 4, 2025. https://jurnal.fmipa.unmul.ac.id/index.php/geofis/article/view/692.