File:Jean Casimir Félix Guyon 2.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	13:01, 30 April 2012		510 × 688 (196 KB)	Materialscientist	{{Information \|Description ={{en\|1=Jean Casimir Félix Guyon (21 July 1831 – 2 August 1920)}} \|Source =http://www2.biusante.parisdescartes.fr/img/?refbiogr=7435&mod=s \|Author =Unknown \|Date =c. 1870s \|Permission = \|ot...

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