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  1. By: Hansen, Keith L - Sweat, Donald E
    Type: Article
    In: Quarterly journal of the Florida Academy of Sciences
    Volume: 25
    Date: 1962
    Page Range: 109--120
    Publication Info: Gainesville, Florida Academy of Sciences,
  2. By: Hansen, Keith L
    Type: Article
    In: Quarterly journal of the Florida Academy of Sciences
    Volume: 22
    Date: 1959
    Page Range: 1--13
    Publication Info: Gainesville, Florida Academy of Sciences,