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ETHBIBAltmann Wil SG Grppelensee Schafberg v. N. O. aus mInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Altmann Wil SG Grppelensee Schafberg aus Uploaded with GWToolset