“GEOTECHNICAL INVESTIGATION OF THE SUB-SOILS CONDITION AROUND YELWA NORTH CENTRAL PART OF NIGERIA FOR THE CONSTRUCTION OF INFRASTRUCTURES”. Nigerian Journal of Technology 42, no. 1 (May 7, 2023): 99–106. Accessed April 19, 2026. https://mail.nijotech.com/index.php/nijotech/article/view/2773.