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ETHBIBMnnedorf Pfannenstiel UetlibergInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Mnnedorf Pfannenstiel Uetliberg Uploaded with GWToolset ETHBIBMnnedorf Pfannenstiel UetlibergInlandflgeLBSMH