Dżaluk A, Malczewski D, Żaba J, Dziurowicz M. Laboratory measurements of natural radioactivity in selected igneous rocks of the Opava Mountains region. geol [Internet]. 2015Aug.5 [cited 2024Dec.11];41(1):73. Available from: https://ggae.agh.edu.pl/index.php/geol/article/view/1457