| Étienne Jules Marey Untitled (Man walking infront of a black screen at the Physiological Station of Paris) 1883, 30 November Magazine illustration Google Books LL/36546 E.J. Marey, "The Physiological Station of Paris, part II", p.708-711, Science, Vol.II, No.42, November 30, 1883, p.709, fig.4.
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