EL HAMEEDY MA, MABROUK WM, DAHROUG S, METWALLY AM. Detection of karst features and associated geohazard using ground penetrating radar and 2D electrical resistivity imaging; case study from Sannur protectorate, Egypt. Contrib. Geophys. Geod. 2023;53(3):167‒190. doi:10.31577/congeo.2023.53.3.1