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  1. By: Ridgel, Gertrude C. - Kloek, Gerrit P.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 39
    Issue: 3-4
    Date: 1978-09
    Page Range: 107--110
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997
  2. By: Ridgel, Gertrude C. - Poignard, Gina - Lott, Denise - Barnett, David
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 40
    Issue: 3-4
    Date: 1979-09
    Page Range: 141--148
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997
  3. By: Ridgel, Gertrude C.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 44
    Issue: 1-2
    Date: 1983-03
    Page Range: 34--39
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997
  4. By: Ridgel, Gertrude C.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 32
    Issue: 3-4
    Date: 1971
    Page Range: 57--61
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997