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AutographJanKantyGregorowicz.svg autograph of Jan Kanty Gregorowicz AutographJanKantyGregorowicz UTC AutographJanKantyGregorowicz Jan Kanty Gregorowicz derivative work Malyszkz talk Zwektoryzowano Krzysztof Zajczkowski malyszkz AutographJanKantyGregorowicz PDOrgelbrand Original upload log This image is derivative work of the