Preliminary geologic map of the Mount Vernon 7 1/2' quadrangle, Skagit County, Washington
By: by D.P. Dethier and J.T. Whetten.
Contributors: Whetten, John T.; Geological Survey (U.S.)
Series: Open-file report -- 81-105; Open-file report (Geological Survey (U.S.)) -- 81-105.
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1981
Place of publication: Seattle, Wash
Language: eng
Format: Microform
Subjects: Geology -- Washington (State) -- Skagit County.
Notes: One map on folded sheet in pocket.

"January 1981."

Bibliography: leaf 8.

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1981]. 2 microfiches.