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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hamilton, William Roger
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 21
    Date: 1973
    Page Range: 73--150
    Publication Info: London, BM(NH),
  2. By: Hamilton, William Roger
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 24
    Date: 1973
    Page Range: 349--395
    Publication Info: London, BM(NH),