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  1. By: Hankin, E H
    Type: Article
    In: Proceedings of the Zoological Society of London.
    Volume: 1920
    Date: 1920
    Page Range: 467--474
    Publication info: London :Academic Press, [etc.],1833-1965.
  2. By: Hankin, E H
    Type: Article
    In: The Auk.
    Volume: 32
    Date: 1915
    Page Range: 245--247
    Publication info: Washington, D.C. :American Ornithologists' Union, etc.,1884-