“Analisis Peningkatan Faktor Keamanan Lereng Pada Areal Bekas Tambang Pasir Dan Batu di Desa Ngablak, Kecamatan Cluwak, Kabupaten Pati: The Analysis of Slope Safety Factors Improvemen at Sand and Gravel Post Mining Land Areas in Ngablak Village, Cluwak District, Pati Regency” (2018) PROMINE, 5(1). doi:10.33019/promine.v5i1.113.