Rhythms in upper Pennsylvanian cyclothems
By: by J. Marvin Weller  Tthickness of glacial drift in DuPage county, Illinois / by A.C. Mason
Contributors: Mason, A. C.; Illinois State Geological Survey
Series: Circular / Illinois State Geological Survey -- no. 92; Circular (Illinois State Geological Survey) -- no. 92.
Publisher: Illinois State Geological Survey
Published: 1943
Place of publication: Urbana
Language: eng
Subjects: Stratigraphic Geology; Drift; Geology
Other titles: Thickness of glacial drift in DuPage county, Illinois.
Notes: Cover title.

"Reprinted from the Transactions, Illinois State Academy of Science, vol. 35, no. 2, December 1942 (1943)."