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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Pollard, John E
    Type: Article
    In: Palaeontology
    Volume: 24
    Date: 1981
    Page Range: 555--588
    Publication Info: London, Palaeontological Association, 1957-
  2. By: Pollard, John E
    Type: Article
    In: Palaeontology
    Volume: 11
    Date: 1968
    Page Range: 376--388
    Publication Info: London, Palaeontological Association, 1957-
  3. By: Pollard, John E
    Type: Article
    In: Palaeontology
    Volume: 9
    Date: 1966
    Page Range: 667--697
    Publication Info: London, Palaeontological Association, 1957-