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CHNB Argentire und Tal von Chamonix mit Mont Blanc von Nordosten Collection Gugelmann GSGUGEHACKERTB.tif Information Argentire und Tal von Chamonix mit Mont Blanc von Nordosten Argentire Umrissradierung koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEHACKERTB helveticarchives