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  1. Common trees /
    By: Macbride, J. Francis (James Francis), - Brownell, Leverett White, - Henner, David - Smith, Huron H. - Woodruff, Frank Morley
    Edition: 2nd. ed.
    Publication info: Chicago:Field Museum of Natural History,1936.
    Holding Institution: Field Museum of Natural History Library
    Subjects: Bomen (biologie)  Identification  North America  Trees  
    BHL Collections: Field Museum Library
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  2. Pennsylvanian tree fern compressions Caulopteris, Megaphyton, and Artisophyton gen. nov. in Illinois /
    By: Pfefferkorn, Hermann W. - Illinois State Geological Survey. - Illinois. Dept. of Registration and Education.
    Publication info: Urbana :Illinois State Geological Survey,1976.
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Bomen (biologie)  Ferns, Fossil  Illinois  Paleobotany  Pennsylvanian  Varens  
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