Ali, Jemila M., and Suhayla A. Ibrahim. 2022. “Measurement of Radium and Radon Exhalation Rate in Marble Samples Used in Al-Bayda City Market-Libya”. Al-Mukhtar Journal of Sciences 37 (3). Al Bayda, Libya:218-25. https://doi.org/10.54172/mjsc.v37i3.626.