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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Biernat, Gertruda - Balinski, Andrzej
    Type: Article
    In: Palaeontology
    Volume: 25
    Date: 1982
    Page Range: 857--867
    Publication Info: London, Palaeontological Association, 1957-
  2. By: Biernat, Gertruda - Williams, Alwyn
    Type: Article
    In: Palaeontology
    Volume: 14
    Date: 1971
    Page Range: 423--430
    Publication Info: London, Palaeontological Association, 1957-
  3. By: Biernat, Gertruda - Williams, Alwyn
    Type: Article
    In: Palaeontology
    Volume: 13
    Date: 1970
    Page Range: 491--502
    Publication Info: London, Palaeontological Association, 1957-