Piedmont folio, West Virginia-Maryland
By: [By N. H. Darton and Joseph A. Taff]
Series: U.S. Geological Survey. Geologic atlas of the United States -- no. 28; Geologic atlas of the United States -- fol. 28
Publisher: U.S. Geological Survey
Published: 1896
Place of publication: Washington, D.C
Language: eng
Subjects: Geology; Maps