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  1. Revision of the Amphibia and Pisces of the Permian of North America,
    By: Case, E. C. - Hussakof, Louis, - Sellards, Elias Howard,
    Publication info: Washington, D.C.,Carnegie Institution of Washington,1911.
    Contributed by: Cornell University Library
    Subjects: Batrachia, Fossil  Fishes, Fossil  Insects, Fossil  North America  Paleontology  Permian  
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