Significant uncertainties in Pennsylvanian correlation in Illinois coal basin
By: by Gilbert H. Cady
Series: Illinois State Geological Survey. Circular -- no. 57; Circular (Illinois State Geological Survey) -- no. 57.
Published: 1939
Place of publication: Urbana
Language: eng
Number of pages: 1524
Subjects: Coal; Stratigraphic Geology; Geology
Notes: "Reprinted from the Bulletin of the American Association of Petroleum Geologists, vol. 23 no. 10 (Tulsa, Oklahoma, October, 1939), pp. 1507-1524."