Geologic atlas of U.S.
Subtitle: Nomini folio, Maryland-Virginia.
Contributors: Darton, Nelson Horatio, 1865-1948.; McGee, W. J., 1853-1912.
Series: Geologic Atlas of U.S. Folio No. 23
Publisher: [s.n.]
Published: 1896
Place of publication: Washington, D.C
Format: Microform
Subjects: Geological mapping -- Maryland.; Geological mapping -- Virginia.