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illinois state geological survey

Type and figured fossils in the Worthen collection at the Illinois State Geological Survey

By Illinois State Geological Survey

Stratigraphic policy of the Illinois State Geological Survey

By Willman, H. B.

Paleobotanical studies and collections

By Tom L. Phillips

Architects contribute to Illinois development

By Joseph F. Booton

Operation of the Illinois State Geological Survey

By Morris M. Leighton

Types of late Cenozoic gastropods in the Frank Collins Baker Collection

By Dr. A. Byron Leonard

Illinois State Geological survey

By Robert Edward Bergstrom

Mineral resource research and activities of the State Geological Survey, 1948-1949

By Morris M. Leighton

Industrial minerals and metals publications of the Illinois State Geological Survey through December 1989

By Jonathan H. Goodwin

Industrial minerals publications of the Illinois State Geological Survey through December 1978

By J. E. Lamar

Administrative report and economic and geological papers

By Illinois State Geological Survey

Papers presented at the Quarter centennial celebration of the Illinois State Geological Survey

By Illinois State Geological Survey

Author index of ISGS publications through September 1995

By Gary B. Dreher

The Illinois State geological survey in war mineral research

By Illinois State Geological Survey

The historical development of the Illinois coal industry and the State Geological Survey

By Morris M. Leighton

The educational extension program of the Illinois State Geological Survey

By Gilbert O. Raasch

Illinois State Geological Survey

By Illinois State Geological Survey

Kane County water well database

By J. James Eidel

Illinois State Geological Survey

By Illinois State Geological Survey

Mineral resource research, 1946-1947, by the Illinois State Geological Survey

By Morris M. Leighton

Perspectives in geology

By Illinois State Geological Survey

State science in Illinois

By Robert G. Hays