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ETHBIBMont Collon Haut Glacier de l'Arolla Matterhorn v. N. W. aus mInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Mont Collon Haut Glacier de l'Arolla Matterhorn aus Uploaded