P.W., M.- d’Ragga, and D. P.K. “MORPHOLOGICAL, PHYSICAL AND CHEMICAL CHARACTERIZATION OF SOILS REPRESENTING THE CLAY PLAINS OF THE SUDAN”. IJRDO-Journal of Agriculture and Research (ISSN: 2455-7668), Vol. 4, no. 1, Jan. 2018, pp. 16-34, doi:10.53555/ar.v4i1.1794.