Browse Illinois County Geologic Map (ICGM) - Illinois State Geological Survey by Series/Report "ICGM Champaign-ST"

  • Domier, Jane E.J.; Luman, Donald E. (Illinois State Geological Survey, Prairie Research Institute, 2014)
    "North American Datum of 1983 (NSRS2007), North American Vertical Datum of 1988. Vector base data from 2013 TIGER/Line Shapefiles provided by the United States Census Bureau."/ Includes location map, text, 1 illustration, ...

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