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ETHBIBUetliberg Uto Staffel Uto KulmInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Uetliberg Uto Staffel Uto Kulm Uploaded with GWToolset ETHBIBUetliberg Uto Staffel Uto