Bulletin - Illinois State Geological Survey.

Urbana : University of Illinois, 1906

Bulletin /

Urbana : University of Illinois, 1906

Bulletin - State of Illinois, Department of Registration and Education, Division of the State Geological Survey.

Urbana, State of Illinois, Dept. of Registration and Information, Division of the State Geological Survey, 1919

Reprint of Illinois parts of INQUA guidebooks and supplemental data for Field Conference C, Upper Mississippi Valley [and] Field Conference G, Great Lakes-Ohio River Valley /

[Illinois] : Illinois State Geological Survey, 1966

Guide book for the Field Conference : held in connection with the 34th Annual Convention of the American Association of Petroleum Geologists /

St. Louis : The Association, 1949

Guidebook.

Bulletin /

Urbana : University of Illinois, 1906

Guidebook series /

Urbana, Ill. : The Survey, 1974

Bulletin.

Report of investigations.

Urbana, Ill., [publisher not identified], 1924

Illinois State Geological Survey guidebook.

[Urbana] : The Survey, 1979