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ETHBIBRti bei Bren v. O. aus mInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Rti bei Bren aus Uploaded with GWToolset ETHBIBRti bei Bren aus mInlandflgeLBSMH epics ethz