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ETHBIBKollbrunn TsstalInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Reprofotografie Negativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Kollbrunn Tsstal Uploaded with GWToolset ETHBIBKollbrunn TsstalInlandflgeLBSMH epics ethz ch tif ETHBIB MittelholzerInland