Revision of Galena stratigraphy, 1972, Gerk, A.J. and Levorson, C.O., 11 p. The Geological Society of Iowa Guidebook Series includes guidebooks for field trips sponsored by the Iowa Geological and Water Survey or the Geological Society of Iowa.
Summary
Revision of Galena stratigraphy, 1972, Gerk, A.J. and Levorson, C.O., 11 p. The Geological Society of Iowa Guidebook Series includes guidebooks for field trips sponsored by the Iowa Geological and Water Survey or the Geological Society of Iowa.