Summary of stratigraphy shown in geologic cross-section of Illinois Basin
By: by L. E. Workman, D. H. Swann, and Elwood Atherton.
Published: 1950
Place of publication: Urbana
Language: eng
Number of pages: 18
Subjects: Geology -- Illinois.; Geology, Stratigraphic.
Notes: "Selected references": p. 18.