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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Clements, F A
    Type: Article
    In: Forktail
    Volume: 7
    Date: 1992
    Page Range: 57--73
    Publication Info: Oxford,
  2. By: Clements, F A - Bradbear, N. J.
    Type: Article
    In: Forktail
    Volume: 2
    Date: 1986
    Page Range: 103--107
    Publication Info: Oxford,