Illinois State Geological Survey Manuscript Devonian of Illinois Union County IL
Dates
Dataset Reference Date
2019-11-21
Info Date
1945
Summary
Illinois State Geological Survey Manuscript County: Union Title: Devonian of Illinois Author: Cooper, G. Arthur, Call Number: MS Cooper, G.A. #1 Location Record 19 of 24
Summary
Illinois State Geological Survey Manuscript County: Union Title: Devonian of Illinois Author: Cooper, G. Arthur, Call Number: MS Cooper, G.A. #1 Location Record 19 of 24