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  1. By: Abbott , James Francis
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia.
    Volume: 51
    Date: 1899
    Page Range: 324--364
    Publication info: Philadelphia,Academy of Natural Sciences of Philadelphia
  2. By: Abbott , James Francis
    Type: Article
    In: Transactions.
    Volume: 30
    Date: 1911
    Page Range: 217--233
    Publication info: Columbus, Ohio [etc.]