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ETHBIBGmndertobelbrcke im Bau Ans AL.tif Spezialmass exhibition history Institution ETHBibliothek Fotografie Papierabzug Aus meiner Studienzeit am Poly ETH Zrich Album mit Bildern alle digitalisiert object history PDold Unbekannt EPics Bildarchiv online org Template ETHBibliothek Gmndertobelbrcke im Bau Uploaded with GWToolset