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  1. Catalog of cores from the sub-Galena Group in Illinois /
    By: Shaw, Thomas H. - Sargent, Michael L. - Illinois State Geological Survey.
    Publication info: Champaign, Ill. :Illinois State Geological Survey,1989.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Borings  Catalogs  Geology  Geology, Stratigraphic  Geophysical methods  Illinois Basin  Natural gas  Paleozoic  Prospecting  
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  2. Distribution of boghead algae in Illinois Basin coal beds /
    By: Peppers, Russel Allen, - Harvey, Richard D. - Illinois State Geological Survey.
    Publication info: Champaign, Ill. :Dept. of Natural Resources, Illinois State Geological Survey,1997.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Algae, Fossil  Analysis  Coal  Illinois Basin  Paleobotany  Spores (Botany), Fossil  Torbanite  
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  3. Fossil peat of the Illinois basin : a guide to the study of coal balls of Pennsylvanian age /
    By: Phillips, Tom Lee, - Avcin, Matthew J., - Berggren, Dwain,
    Publication info: Urbana :Illinois State Geological Survey,1976.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Coal balls  Illinois Basin  Paleobotany  Pennsylvanian  
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