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Authors of the photographs: Arkadiusz Makowski (photo 1), Sebastian R. Bielak (photo 2-4, 8-12, 14-15, 20-23), Anna J. Nowak (photo 5-7, 16-18), Katarzyna Skoczylas (photo 13), MCC ''Dab'' (photo 19), Katarzyna Pawlak (photo 24).