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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Mackintosh, N A
    Type: Article
    In: Proceedings of the Zoological Society of London
    Volume: 1923
    Date: 1923
    Page Range: 501--513
    Publication Info: London, Academic Press, [etc.], 1833-1965
  2. By: Mackintosh, N A - Wheeler, J. F. G.
    Type: Article
    In: Discovery reports
    Volume: 1
    Date: 1929-11
    Page Range: 257--540
    Publication Info: London, Cambridge University Press,