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  1. By: Caldwell, Ronald S.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 41
    Issue: 1-2
    Date: 1980-03
    Page Range: 46--47
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997
  2. By: Caldwell, Ronald S. - Bryan, Hal
    Type: Article
    In: Brimleyana
    Volume: 8
    Date: 1982
    Page Range: 91--100
    Publication Info: [Raleigh, NC, North Carolina State Museum of Natural History], 1979-
  3. By: Caldwell, Ronald S. - Copeland, John E - Mears, George L - Douglas, Daniel A
    Type: Article
    In: American malacological bulletin
    Volume: 32
    Issue: 2
    Date: 2014
    Page Range: 211--216
    Publication Info: [Hattiesburg, Miss.?] [American Malacological Union] 1983-