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Geology topics

Research about Hardin County, illinois

Source-linked reports with geographic coverage including Hardin County, illinois.

1 recordsLinked to original sources

USGS1944

Geological and geophysical survey of fluorspar areas in Hardin County, Illinois - Part 1, Geology of the Cave in Rock district; Part 2, An exploratory study of faults in the Cave in Rock and Rosiclare districts by the earth-resistivity method

No abstract available.

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