GEOTECHNICAL PROPERTIES OF MAKURDI SHALE AND EFFECTS ON FOUNDATIONS. Nigerian Journal of Technology, [S. l.], v. 26, n. 2, p. 63–73, 2008. DOI: 10.4314/njt.262.474. Disponível em: https://nijotech.com/index.php/nijotech/article/view/474. Acesso em: 16 apr. 2026.