Landslide investigations using direct current resistivity and ground-penetrating radar methods: case study Cikahuripan Village, Lembang, West Bandung, West Java, Indonesia - null Widodo; null Fatkhan; Wahyudi W Parnadi; Djoko Santoso; Darharta Dahrin; Dadi Abdurahman; null Setianingsih (All Earth, 2025)