Results of spirit leveling in Illinois, 1911 to 1913, inclusive
By: R.B. Marshall, chief geographer. Work done in cooperation with the State geological survey of Illinois, F.W. De Wolf, director.
Contributors: Illinois State Geological Survey
Series: U.S. Geological survey. Bulletin 553
Publisher: Govt. Print. Off.
Published: 1914
Place of publication: Washington
Language: eng
Number of pages: 110
Subjects: Illinois -- Altitudes.
Notes: Includes index.