Title: Data from controlled drilling program in Boone and De Kalb Counties, Illinois
First published: 1976
Subjects: Borings, Geology, Geology, Stratigraphic, Stratigraphic Geology
Places: Boone Co, De Kalb Co, Illinois
Time periods: Quaternary
LC classification: QE105 .A32 no. 77, QE696 .A32 no. 77