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Karasiewicz, T., Tobojko, L., Świtoniak, M., Milewska, K. and Tyszkowski, S. 2019. The morphogenesis of erosional valleys in the slopes of the Drwęca valley and the properties of their colluvial infills. Bulletin of Geography. Physical Geography Series. 16 (Jun. 2019), 5–20. DOI:https://doi.org/10.2478/bgeo-2019-0001.