OMER, O. G.; ELSHARIEF, A. M. .; MOHAMMED, A. E. H. Characterization and Improvement of Natural and Blended un-bound Gravels From Khartoum State for Use as Base Course Material. Journal of Building and Road Research, [S. l.], v. 18, 2021. DOI: 10.53332/jbrr.v18i.593. Disponível em: http://onlinejournals.uofk.edu/index.php/JBRR/article/view/593. Acesso em: 4 apr. 2025.