Sulieman, Salwa Hassan Ahmed. “Indicators of Desertification and Its Impact on the Degradation of Agricultural Lands: A Study of the Geography of Gadaref State”. Journal of Agricultural, Environmental and Veterinary Sciences, vol. 7, no. 4, Dec. 2023, pp. 1-10, https://doi.org/10.26389/AJSRP.L150523.