Strzelecki, Piotr Jan. “The Provenance of Erratic Pebbles from a till in the Vicinity of the City of Radom, Central Poland”. Geology, Geophysics and Environment 45, no. 1 (April 25, 2019): 21. Accessed December 3, 2024. https://ggae.agh.edu.pl/index.php/geol/article/view/3107.