Measuring of 222Rn gas concentration and mapping in Al-Najaf soil samplesSalar Hussein Ibrahem, Hussam Muhsin Hwail, Areej Saeed Abd Ulshaheed, Ali Abid Abojassim and Lubna A. AlasadiE3S Web Conf., 592 (2024) 06021DOI: https://doi.org/10.1051/e3sconf/202459206021