Ajak, A. O. P., A. E. Abdalla, and M. A. Mohamed Elagab. “The IMPACT OF PETROLEUM WASTES ON SOIL AND LOCAL ENVIRONMENT IN MELUT AND MABAN - UPPER NILE STATE- SOUTH SUDAN.”. IJRDO Journal of Forestry, Wild Life and Environment , Vol. 9, no. 3, Mar. 2023, pp. 1-8, https://ijrdo.org/index.php/few/article/view/5594.