National Geologic Map Database
General Information
- Title: Ordovician system in the upper Mississippi Valley
- Author(s): Kay, G.M.
- Publishing Organization: Kansas Geological Society
- Series and Number: Guidebook for the Annual Field Conference no. 9 [p. 281-295]
- Larger Work: Kay, G.F. and Trowbridge, A.C., eds., Upper Mississippi Valley, Iowa City, Iowa, to Duluth, Minnesota
- Publication Date: 1935
- Cross Section: None
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