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ETHBIBGemsfairenstock Klausenpass Glatten Mren. Teufelsstcke Klausenpass v. S. aus mInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Gemsfairenstock Klausenpass Glatten Mren