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ETHBIBNiedergsgen Dniken Obergsgen Winznau Will Olten Hauenstein 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 Niedergsgen Dniken Obergsgen Winznau Will Olten