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9 Pages in Charles Darwin's Library associated with "mental states - attentiveness"

  1. De la physionomie et des mouvements d'expression.
    By: Gratiolet, Pierre.
    Publication info: Paris :J. Hetzel,1865.
    Pages: Page 230  Page 232  Page 233  Page 234  Page 254  Page 283  Page 322  
  2. Wissenschaftliches System der Mimik und Physiognomik.
    By: Piderit, T.
    Publication info: Detmold :Klingenberg,1867.
    Pages: Page 88  Page 92