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  1. An Early Pennsylvanian flora with megalopteris and noeggerathiales from west-central Illinois /
    By: Leary, Richard L. - Pfefferkorn, H. W., - Illinois State Museum.
    Publication info: Urbana :Illinois State Geological Survey,1977.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Flora (biologie)  Fossielen  Illinois  Megaloptera  Paleobotany  Pennsylvanian  
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