The geology of Hardin County, and the adjoining part of Pope County,
by Stuart Weller, with the collaboration of Charles Butts, L.W. Currier, and R.D. Salisbury: in cooperation with the United States Geological Survey.
Illinois State Geological Survey Bulletin No. 41
APA Citation
Weller, S., Salisbury, R. D., Currier, L. W., Butts, C., Geological Survey (U.S.). (1920). The geology of Hardin County, and the adjoining part of Pope County. Urbana: Illinois State Journal Co., State printers].
MLA Citation
Geological Survey (U.S.), et al.. The Geology of Hardin County, And the Adjoining Part of Pope County. Urbana: Illinois State Journal Co., State printers], 1920.
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