Radaszewski, Robert, and Jędrzej Wierzbicki. “On the Applicability of in Situ Soil Probings to Geological Analyses”. Geologos 17, no. 1 (April 4, 2011): 5–16. Accessed May 19, 2024. https://pressto.amu.edu.pl/index.php/logos/article/view/v10118-011-0001-x.