The gold quartz veins of Grass valley, California
By: by W. D. Johnston, Jr.
Publisher: U.S. Govt. Print. Off.
Published: 1940
Place of publication: Washington
Language: eng
Number of pages: 101
Subjects: Gold mines and mining -- California -- Grass Valley.
Notes: Contains references.
At head of title: United States Department of the Interior.
Map and 4 colored diagrams in pocket.