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ETHBIBLtschenlcke Bietschhorn Walliseralpen v. N. O. aus mInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Ltschenlcke Bietschhorn Walliseralpen aus Uploaded with GWToolset