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  1. By: Twedt, Daniel J.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 45
    Issue: 1-2
    Date: 1984-03
    Page Range: 1--3
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997
  2. By: Twedt, Daniel J. - Linz, George M - Bleier, William J
    Type: Article
    In: The Canadian field-naturalist
    Volume: 115
    Issue: 4
    Date: 2001
    Page Range: 549--554
    Publication Info: Ottawa Ottawa Field-Naturalists' Club