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ETHBIBChur Rossboden Felsberg DomatEmsInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Chur Rossboden Felsberg Domat Uploaded with GWToolset ETHBIBChur Rossboden Felsberg Domat