The river and the rocks
Subtitle: the geologic story of Great Falls and 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.).
Edition: [2d ed.].
Series: U.S. Geological Survey bulletin ; 1471; Geological Survey bulletin ;; 1471.
Publisher: U.S. Govt. Print. Off. : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1980
Place of publication: Washington
Language: eng
Number of pages: 75
Subjects: Geology -- Great Falls of the Potomac (Md. and Va.) -- Guidebooks.; Natural history -- Great Falls of the Potomac (Md. and Va.) -- Guidebooks.; Great Falls of the Potomac (Md. and Va.) -- Guidebooks.
Genres: Guidebooks.
Notes: Bibliography: p. 74.
Edition of 1970 by United States Geological Survey and National Park Service.