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ETHBIBZrichBurghlzli Forchstrasse Lenggstrasse zum Burghlzli aus mInlandflgeLBS MH.tif Im Hintergrund Bleulerstrasse entlang der Schweizerischen Anstalt fr Epileptische cm exhibition history Institution ETHBibliothek Fotografie Glasplattennegativ object history PDoldauto Creator Walter Mittelholzer EPics Bildarchiv online org