Kareem Al-Mamoori, S.; L. Kareem, S.; A. Al-Maliki, L.; El-Tawil, K. Geotechnical Maps for Angle of Internal Friction of An-Najaf Soil-Iraq Using GIS. WJES 2021, 8 (2). https://doi.org/10.31185/ejuow.Vol8.Iss2.166.