[1]
Omer, O.G., Elsharief, A.M. and mohammed, A.E.H. 2021. 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. 18, (Dec. 2021). DOI:https://doi.org/10.53332/jbrr.v18i.593.