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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Potter, Nathan S - Harrison, Julian R. 3rd
    Type: Article
    In: The Wilson bulletin
    Volume: 65
    Issue: 4
    Date: 1953
    Page Range: 252--270
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Potter, Nathan S - Harrison, Julian R. 3rd
    Type: Article
    In: The Wilson bulletin
    Volume: 60
    Issue: 3
    Date: 1948
    Page Range: 159--163
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-