BC E, HU E. Measurement of background ionizing radiation in the federal university of technology owerri, Nigeria using calibrated digital geiger counter. Int J Phys Res Appl [Internet]. 2020 May 25 [cited 2025 Apr. 25];3(1):070-4. Available from: https://www.physicsresjournal.com/ijpra/article/view/ijpra-aid1025