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Author(s): Pfefferkorn, Hermann W. - Peppers, Russel A.
Publisher(s): Illinois State Geological Survey
Contributor(s): Biodiversity Heritage Library
Collection(s): Biodiversity Heritage Library
Category: Others
Subject(s): Paleobotany--Pennsylvanian. , Flora (biologie)--gtt , Varens.--gtt , Ferns, Fossil--Illinois--Will County. , Ferns, Fossil--Illinois--Grundy County. , Plants, Fossil--Illinois--Will County. , Plants, Fossil--Illinois--Grundy County. , Bevruchting.--gtt

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