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ETHBIBMelchnau Busswil bei Melchnau Obersteckholz Lotzwil v. S. O. aus mInlandflgeLBS MH.tif cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org Template ETHBibliothek Melchnau Busswil bei Melchnau Obersteckholz Lotzwil