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  1. By: Watson, James D, - Lewis, George Porter, - Leopold, Nathan Freudenthal,
    Publication info: [Chicago], [G.W. Lewis Pub. Co.], [1920?]
    Holding Institution: Field Museum of Natural History Library
    BHL Collections: Blog Features
  1. By: Leopold, Nathan Freudenthal,
    Type: Article
    In: The Auk
    Volume: 37
    Date: 1920
    Page Range: 136--137
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-
  2. By: Leopold, Nathan Freudenthal,
    Type: Article
    In: The Auk
    Volume: 36
    Date: 1919
    Page Range: 276--276
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-
  3. By: Leopold, Nathan Freudenthal,
    Type: Article
    In: The Auk
    Volume: 37
    Date: 1920
    Page Range: 600--601
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-