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  1. By: Gunthorp, Horace
    Type: Article
    In: The Kansas University science bulletin
    Volume: 7
    Date: 1913
    Page Range: 159--182
    Publication Info: Lawrence, Kan, The University, 1902-1924
  2. By: Gunthorp, Horace
    Type: Article
    In: The Auk
    Volume: 36
    Date: 1919
    Page Range: 492--496
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-