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ETHBIBTitlis Trebsee FleckistockInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Titlis Trebsee Fleckistock Uploaded with GWToolset ETHBIBTitlis Trebsee FleckistockInlandflgeLBSMH