Geology of the Chesapeake and Ohio Canal National Historical Park and Potomac River corridor, District of Columbia, Maryland, West Virginia, and Virginia /
Southworth, Scott,1957-
United States.Department of the Interior.
Geological Survey (U.S.)
Reston, Va. : U.S. Geological Survey,
2008.
One colour folded map in pocket.
Includes bibliographical references (p. 93-97).
Geology, Stratigraphic
Geology, Stratigraphic
Geology
Geology
Also available via Internet.