Iowa Geological Survey Annual Report

Article Title

Echinoderms of the Iowa Devonian

Authors

A. O. Thomas

Rights

Material in the public domain. No restrictions on use.

Recommended Citation

Thomas, A. O. (1920) "Echinoderms of the Iowa Devonian," Iowa Geological Survey Annual Report: Vol. 29: p. 385-552.
Available at: http://ir.uiowa.edu/igsar/vol29/iss1/8