schema:name | Illinois. Dept. of Registration and Education. State Geological Survey; Illinois. Geological Survey; University of Illinois (Urbana-Champaign campus). State Geological Survey; Illinois. Division of the State Geological Survey; Illinois. State Geological Survey; Illinois. Illinois State Geological Survey; Illinois. Dept. of Energy and Natural Resources. State Geological Survey; Illinois. State Geological Survey Division; Illinois Institute of Natural Resources. State Geological Survey Division; ISGS |