Iowa Geological Survey Annual Report

Article Title

Ceramic Shales and Clays of Iowa

Authors

Charles S. Gwynne

Rights

Material in the public domain. No restrictions on use.

Recommended Citation

Gwynne, Charles S. (1941) "Ceramic Shales and Clays of Iowa," Iowa Geological Survey Annual Report: Vol. 38: p. 263-378.
Available at: http://ir.uiowa.edu/igsar/vol38/iss1/4