Geologic atlas of U.S.
Subtitle: Oelrichs folio, South Dakota-Nebraska.
Contributors: Darton, Nelson Horatio, 1865-1948.
Series: Geologic Atlas of U.S. Folio No. 85
Publisher: [s.n.]
Published: 1902
Place of publication: Washington, D.C
Format: Microform
Subjects: Geological mapping -- South Dakota.; Geological mapping -- Nebraska.