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ETHBIBZrichEngeInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek ZrichEnge Uploaded with GWToolset ETHBIBZrichEngeInlandflgeLBSMH epics ethz ch tif ETHBIB MittelholzerInland