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CHNB Bern Mnster und Mnsterplattform von Sden Collection Gugelmann GSGUGENTHIGERC.tif Information Bern Mnster und Mnsterplattform von Sden Bern Kupferstich Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGENTHIGERC helveticarchives ch aspx ID helveticarchives ch Swiss National Library Prints