Tsegaselassie, Ashenafi, and Samuel Tadesse. “SUPPLEMENTING CONVENTIONAL SITE INVESTIGATION TECHNIQUES OF EARTHWORKS AND SUB-GRADE SOILS WITH GEOPHYSICAL INVESTIGATION IN ROAD DESIGN”. Zede Journal of Ethiopian Engineers and Architects 33 (February 8, 2023): 27–35. Accessed November 24, 2024. http://ejol.aau.edu.et/index.php/ZEDE/article/view/6487.