Measurement of radon Gas Concentrations and Radon Exhalation Rate in Cement Samples Using a Nuclear Trace Detector (CR-39). cbej [Internet]. 2023 Sep. 22 [cited 2026 Jun. 6];29(120):328-3. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/10774