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ETHBIBFribourg bersicht Lac de Prolles 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 Fribourg bersicht Lac de Prolles aus Uploaded with GWToolset ETHBIBFribourg