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Gravure sur acier de physicien Isaac Newton1870 originale de mes propres archives physicien personnes un homme seul Gravure du physicien Isaac Newton de 1870
http://farm5.static.flickr.com/4110/4948325162_1323a54a89.jpg physicien personnes un homme seul Engraving of physicist Isaac Newton from 1881
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Julius Robert von Mayer (1814 - 1878) was a German physician and physicist and one of the founders of thermodynamics. Wood engraving, published in 1877. [url=http://deutsch.istockphoto.com/search/lightbox/12345515#13b32b7f][img]http://www.bilder-hochladen.net/files/jlxo-3-eccb.jpg[/img][/url] science vertical scientifique Julius Robert von Mayer (1814-1878), German physician and physicist