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Bulletin - State of Illinois, State Geological Survey.

APA Citation

Illinois State Geological Survey. (191216). Bulletin - State of Illinois, State Geological Survey. Urbana: Illinois State Geological Survey, University of Illinois.

MLA Citation

Illinois State Geological Survey. Bulletin - State of Illinois, State Geological Survey. Urbana: Illinois State Geological Survey, University of Illinois, 191216.

Warning: These citations may not always be complete (especially for serials).