Geologic atlas of U.S.
Subtitle: Accident-Grantsville folio, Maryland-Pennsylvania-West Virginia.
Contributors: Clark, William.; Martin, G. C.
Series: Geologic Atlas of U.S. Folio No. 160
Publisher: [s.n.]
Published: 1908
Place of publication: Washington, D.C
Format: Microform
Subjects: Geological mapping -- Maryland.; Geological mapping -- Pennsylvania.; Geological mapping -- West Virginia.