TY  - RPRT
TI  - 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
AU  - Louis W. Currier
AU  - Oscar Emil Wagner
AU  - M. King Hubbert
PY  - 1944
DO  - 10.3133/b942
UR  - https://pubs.usgs.gov/publication/b942
ID  - b942
ER  -