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  1. By: Estes, Richard - Frazzetta, T. H. (Thomas Henry), - Williams, Ernest E. (Ernest Edward)
    Type: Article
    In: Bulletin of the Museum of Comparative Zoology at Harvard College
    Volume: 140
    Date: 1970
    Page Range: 25--73
    Publication Info: Cambridge, Mass The Museum 1863-
  2. By: Frazzetta, T. H. (Thomas Henry),
    Type: Article
    In: Bulletin of the Museum of Comparative Zoology at Harvard College
    Volume: v.119 (1958-1959)
    Date: 1958-1959
    Page Range: 453-472
    Publication Info: Cambridge, Mass The Museum 1863-