SKOWRON, RAJMUND, and ADAM PIASECKI. “WATER TEMPERATURE AND ITS DIVERSITY IN THE DEEPEST LAKES OF THE TUCHOLA FOREST AND THE KASHUBIAN AND BRODNICKIE LAKELANDS”. Bulletin of Geography. Physical Geography Series, no. 7 (March 16, 2015): 105–119. Accessed August 17, 2024. https://apcz.umk.pl/BOGPGS/article/view/bgeo-2014-0005.