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Proceedings of the Academy of Natural Sciences of Philadelphia v.61 (1909)

Parts

  1. Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 61
    Date: 1909
    Page Range: 572--573
    Publication info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  2. Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 61
    Date: 1909
    Page Range: 586--587
    Publication info: Philadelphia, Academy of Natural Sciences of Philadelphia,