Silurian geology of the Des Plaines River valley, northeastern Illinois.  by D.G. Mikulic [and others]
Publisher: Illinois State Geological Survey
Place of publication: Champaign
Language: eng
Number of pages: 56
Subjects: Geology - Illinois; Geology - Guidebooks - Illinois
Notes: Nineteenth annual meeting, North-Central section of the Geological Society of America Northern Illinois University, De Kalb, Illinois, April 25-27, 1985

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