The Mother Lode system of California,
Knopf, Adolph, 1882-
The Mother Lode system of California, by Adolph Knopf. Prepared in cooperation with the California State Mining Bureau. - Washington, U.S. Govt. Print. Off., 1929. - viii, 88 p. incl. illus., tables, diagrs. 12 pl. (part fold., incl. maps (1 col.)) 29 cm. - United States. Geological Survey. Professional paper 157 . - Geological Survey professional paper ; 157. .
At head of title: Department of the Interior. Map folded in pocket.
gs 29000083
Ore deposits--California.
Gold mines and mining--California.
QE75 / .P9 no. 157
I 19.16:157
The Mother Lode system of California, by Adolph Knopf. Prepared in cooperation with the California State Mining Bureau. - Washington, U.S. Govt. Print. Off., 1929. - viii, 88 p. incl. illus., tables, diagrs. 12 pl. (part fold., incl. maps (1 col.)) 29 cm. - United States. Geological Survey. Professional paper 157 . - Geological Survey professional paper ; 157. .
At head of title: Department of the Interior. Map folded in pocket.
gs 29000083
Ore deposits--California.
Gold mines and mining--California.
QE75 / .P9 no. 157
I 19.16:157