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  1. By: Dubois, Patterson
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 49
    Issue: 195
    Date: 1910
    Page Range: 243--266
    Publication Info: Philadelphia, American Philosophical Society,
  2. By: Dubois, Patterson
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 34
    Issue: 147
    Date: 1895
    Page Range: 67--71
    Publication Info: Philadelphia, American Philosophical Society,
  3. By: Dubois, Patterson
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 53
    Issue: 215
    Date: 1914
    Page Range: 307--322
    Publication Info: Philadelphia, American Philosophical Society,