Wiratama, R. . STABILITY ANALYSIS OF ROCK SLOPE USING SLOPE STABILITY PROBABILITY CLASSIFICATION (SSPC) METHOD IN PIYUNGAN-PATUK AREA, YOGYAKARTA SPECIAL REGION: ANALISIS STABILITAS LERENG BATUAN DENGAN METODE SLOPE STABILITY PROBABILITY CLASSIFICATION (SSPC) PADA KAWASAN PIYUNGAN-PATUK, DAERAH ISTIMEWA YOGYAKARTA. Program Studi S1 Teknik Pertambangan Universitas Papua 2022, 1, 59-68.