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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Rawson, Peter Franklin
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 20
    Date: 1971
    Page Range: 27--86
    Publication Info: London, BM(NH),
  2. By: Rawson, Peter Franklin
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 26
    Date: 1975
    Page Range: 129--159
    Publication Info: London, BM(NH),