Geology of the Duffield quadrangle, Virginia
By: Department of the Interior, United States Geological Survey ; by Leonard D. Harris and Ralph L. Miller.
Contributors: Harris, Leonard D.; Miller, Ralph L. 1909-
Series: Geologic quadrangle map -- GQ-111.
Publisher: The Survey
Place of publication: Reston, Va
Format: Map
Subjects: Geology -- Virginia -- Maps.
Genres: Maps.
Other titles: Duffield quadrangle, Virginia, geologic map.
Notes: Relief shown by contours and spot heights.

"Geology mapped in 1952-1954."

Includes text, bibliography, table, cross section, and quadrangle map.