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Jarosław Chmielewski
Institute of Environmental Protection-National ResearchWarsaw, Poland
Piotr Kusztal
Institute of Geography
Department of Geomorphology, Geoarchaeology and Environmental Development,
the Jan Kochanowski University in KielceKielce, Poland
Ilona Żeber-Dzikowska
Institute of Biology
The Jan Kochanowski University in KielceKielce, Poland