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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Cyon, Élie de,
    Edition: 2. éd., rev. et augm.
    Publication info: Paris, F. Alcan, 1912
    Holding Institution: University of Toronto - Thomas Fisher Rare Book Library
  2. By: Cyon, Élie de,
    Publication info: Berlin, August Hirschwald, 1888
    Holding Institution: Columbia University Libraries
  3. By: Cyon, Élie de,
    Publication info: Paris F. Alcan 1905
    Holding Institution: University of Toronto - Gerstein Science Information Centre