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  1. By: Agassiz, A
    Type: Article
    In: Bulletin of the Museum of Comparative Zoology at Harvard College
    Volume: 17
    Date: 1889
    Page Range: 121--170
    Publication Info: Cambridge, Mass The Museum 1863-
  2. By: Faxon, Walter, - Agassiz, A
    Type: Article
    In: Bulletin of the Museum of Comparative Zoology at Harvard College
    Volume: 9
    Date: 1882
    Page Range: 197--250
    Publication Info: Cambridge, Mass The Museum 1863-