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  1. By: Julien, Alexis A
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 34
    Date: 1882
    Page Range: 335--346
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  2. By: Julien, Alexis A
    Type: Article
    In: Annals of the New York Academy of Sciences
    Volume: 1
    Date: 1879
    Page Range: 318--354
    Publication Info: New York, New York Academy of Sciences,