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  1. By: Hodgkinson, Richard Lloyd
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 48
    Issue: 1
    Date: 1992-06-25
    Page Range: 1--8
    Publication Info: London, BM(NH),
  2. By: Hodgkinson, Richard Lloyd
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 48
    Date: 1992
    Page Range: 45--78
    Publication Info: London, BM(NH),