river and the rocks
Subtitle: the geologic story of Great Falls and the Potomac River Gorge
By: by John C. Reed, Jr., Robert S. Sigafoos, and George W. Fisher
Contributors: Sigafoos, Robert Sumner, 1920-, joint author; Fisher, George Wescott, 1937-, joint author; Geological Survey (U.S.)
Series: Geological Survey bulletin ; 1471; Geological Survey bulletin -- 1471
Publisher: Dept. of the Interior, Geological Survey; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1980
Place of publication: [Reston, Va.]; Washington
Language: eng
Number of pages: 75
Notes: Bibliography: p. 74