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CHNB Erlach Schloss von Sdwesten Collection Gugelmann GSGUGEABERLI.tif Information Erlach Schloss von Sdwesten Schloss Erlach von Sdwesten Erlach Umrissradierung koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEABERLI helveticarchives ch aspx ID helveticarchives ch Swiss National