Elkton-Wilmington folio
Subtitle: Maryland-Delaware-New Jersey- Pennsylvania
By: by F. Bascom and B. L. Miller ; surveyed in cooperation with the state of Maryland
Series: Geologic atlas of the United States -- no. 211; Geologic atlas of the United States -- fol. 211
Publisher: U.S. Geological Survey
Published: 1920
Place of publication: Washington
Language: eng
Number of pages: 22
Subjects: Geology
Notes: Cover title.