Abdullah, Maharan Gafer, and Emran Eisa Saleh. 2023. “Assessment of Natural and Anthropogenic Radioactivity Levels and Their Radiological Hazards in Surface Soil Samples Around Oil Refinery, Aden Assoghra City, Yemen”. University of Aden Journal of Natural and Applied Sciences 27 (2):323-33. https://doi.org/10.47372/uajnas.2023.n2.a13.