Piętka, Sławomir, Wojciech Misiukiewicz, and Adam Olszewski. “The The Impact of the Different Period of Occurrence of the European Beaver Population on Its Feeding Behavior and Impact on the Environment”. Polish Journal of Natural Sciences 38, no. 2 (December 31, 2023). Accessed November 22, 2024. https://czasopisma.uwm.edu.pl/index.php/pjns/article/view/9376.