01172cam a22003131 4500 gs 29000083 DLC 20260227111333.0 820927s1929 dcuabf f000 0 eng c gs 29000083 (OCoLC)8810266 Library, U.S. Geological Survey CU-A ISS DLC premarc n-us-ca QE75 .P9 no. 157 TN423.C2 K6 Copy 2. I 19.16:157 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 At head of title: Department of the Interior. Map folded in pocket. Ore deposits California. Gold mines and mining California. California State Mining Bureau. Geological Survey professional paper ; 157. 26706 26706