Geologic atlas of U.S.
Subtitle: Elk Point folio, South Dakota-Nebraska-Iowa.
Contributors: Todd, J. E.
Series: Geologic Atlas of U.S. Folio No. 156
Publisher: [s.n.]
Published: 1908
Place of publication: Washington, D.C
Format: Microform
Subjects: Geological mapping -- South Dakota.; Geological mapping -- Nebraska.; Geological mapping -- Iowa.