. Al-Gazali, H. H. A. (2013) “Determination and Mapping of Activity Levels of 40K in Madloom Region in Al-Najaf Al-Ashraf”, Journal of Kufa-Physics, 5(1). Available at: https://journal.uokufa.edu.iq/index.php/jkp/article/view/7461 (Accessed: 17 May 2024).