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  1. By: Ray, Milton S
    Type: Article
    In: The Auk
    Volume: 23
    Date: 1906
    Page Range: 400--418
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-
  2. By: Ray, Milton S
    Type: Article
    In: The Auk
    Volume: 21
    Date: 1904
    Page Range: 425--442
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-
  3. By: Ray, Milton S
    Type: Article
    In: The Auk
    Volume: 20
    Date: 1903
    Page Range: 180--193
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-
  4. By: Ray, Milton S
    Type: Article
    In: The Auk
    Volume: 22
    Date: 1905
    Page Range: 363--371
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-