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CHNB Umgebung Bern Collection Gugelmann GSGUGEABERLIa.tif Information Creator Johann Ludwig Aberli Creator Adrian Zingg Umgebung Bern Erfundene Landschaft Bern Radierung Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEABERLIa helveticarchives ch aspx ID helveticarchives ch Swiss National