Stratigraphy of the Upper Devonian Shell Rock formation of north-central Iowa
By: by Donald L. Koch.
Publisher: Iowa Geological Survey
Published: 1970
Place of publication: Iowa City
Language: eng
Number of pages: 123
Subjects: Geology, Stratigraphic -- Devonian.; Geology -- Iowa.
Notes: Bibliography: p. 54-57.
Part of illustrative matter in pocket.