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ETHBIBGrand Combin Glacier de Boveri Mont Velan v. N. aus mInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Grand Combin Glacier de Boveri Mont Velan aus Uploaded with GWToolset