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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Sferra, N J
    Type: Article
    In: Entomological news
    Volume: 97
    Date: 1986
    Page Range: 121--123
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  2. By: Sferra, N J
    Type: Article
    In: Raptor research
    Volume: 18
    Issue: 4
    Date: 1984
    Page Range: 148--150
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]
  3. By: Sferra, N J
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 45
    Issue: 3-4
    Date: 1984-09
    Page Range: 128--131
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997