IDENTIFIKASI LAPISAN PENYEBAB LONGSOR MENGGUNAKAN GROUND PENETRATING RADAR AREA MONUMEN PESAWAT SANGATTA PT. KALTIM PRIMA COAL. geo. sci. kut. bas. [Internet]. 2020 Aug. 28 [cited 2025 Sep. 5];3(2). Available from: https://jurnal.fmipa.unmul.ac.id/index.php/geofis/article/view/692