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  1. By: Bailey, Alfred M. (Alfred Marshall), - Wright, Earl G
    Type: Article
    In: The Wilson bulletin
    Volume: 43
    Issue: 2
    Date: 1931
    Page Range: 114--142
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Bailey, Alfred M. (Alfred Marshall), - Wright, Earl G
    Type: Article
    In: The Wilson bulletin
    Volume: 43
    Issue: 3
    Date: 1931
    Page Range: 190--219
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-