Illinois State Geological Survey Manuscript A Ground Magnetic Survey of the Johnson County Area of Illinois Johnson County IL
Dates
Dataset Reference Date
2019-11-21
Info Date
1977
Summary
Illinois State Geological Survey Manuscript County: Johnson Title: A Ground Magnetic Survey of the Johnson County Area of Illinois Author: Heigold, Paul C., Philip L. Robare Call Number: MS Heigold, P.C. #2 Location Record 2 of 27
Summary
Illinois State Geological Survey Manuscript County: Johnson Title: A Ground Magnetic Survey of the Johnson County Area of Illinois Author: Heigold, Paul C., Philip L. Robare Call Number: MS Heigold, P.C. #2 Location Record 2 of 27