Stankowski W. Transformation from natural (thermal contraction) to anthropogenic (resource exploitation) depressions in the Krotoszyn-Koźmin-Raszków area (Polish Lowland). logos [Internet]. 2012 Apr. 6 [cited 2024 May 17];18(1):43-50. Available from: https://pressto.amu.edu.pl/index.php/logos/article/view/v10118-012-0004-2