The Mississippian-Pennsylvanian unconformity in southern Illinois
By: by Raymond Siever
Series: Illinois.  State Geological Survey.  Report of investigations -- no. 152.
Publisher: Illinois State Geological Survey
Published: 1951
Place of publication: Urbana
Language: eng
Number of pages: 581
Subjects: Stratigraphic Geology; Geology
Notes: Bibliographical footnotes.