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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Brunton, C. Howard C., - Mason, T R
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 31
    Issue: 2
    Date: 1979-08-30
    Page Range: 91--108
    Publication Info: London, BM(NH),