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CHNB Rheinwaldgletscher Teilansicht Collection Gugelmann GSGUGEGESSNERS.tif Information Rheinwaldgletscher Teilansicht Blick auf den Rheinwaldgletscher Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEGESSNERS helveticarchives ch aspx ID helveticarchives ch Swiss National Library Prints