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ETHBIBAltsttten Hirschberg Alpstein Stoss Sntis 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 Altsttten Hirschberg Alpstein Stoss Sntis aus Uploaded with GWToolset