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

Description

Viewability

Item Link Original Source
Full view   Illinois State Geological Survey Bulletin No. 41 University of Illinois at Urbana-Champaign