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  1. By: Peckham, S F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 37
    Issue: 157
    Date: 1898
    Page Range: 108--139
    Publication Info: Philadelphia, American Philosophical Society,
  2. By: Peckham, S F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 10
    Issue: 80
    Date: 1868
    Page Range: 445--462
    Publication Info: Philadelphia, American Philosophical Society,
  3. By: Peckham, S F
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 36
    Issue: 154
    Date: 1897
    Page Range: 103--112
    Publication Info: Philadelphia, American Philosophical Society,