Uscka-Kowalkowska, Joanna, Michał Posyniak, Krzysztof M. Markowicz, and Jerzy Podgórski. 2017. “Comparison of the Linke Turbidity Factor in Warsaw and in Belsk”. Bulletin of Geography. Physical Geography Series, no. 13 (December):71-81. https://doi.org/10.1515/bgeo-2017-0015.