00949cam a22002651 4500 gs 40000267 DLC 20260227111345.0 780708s1940 dcuabd b f000 0 eng gs 40000267 (OCoLC)4032074 DLC OClU OCoLC DLC premarc TN423.C2 J6 557.3 Johnston, William Drumm, 1899- The gold quartz veins of Grass valley, California, by W. D. Johnston, Jr. Washington, U.S. Govt. Print. Off., 1940. vi, 101 p. incl. illus., tables. 35 pl. (part fold., incl. maps, diagrs.) 29 cm. Geological Survey (U.S.). Professional paper, 194 At head of title: United States Department of the Interior. Map and 4 colored diagrams in pocket. Contains references. Gold mines and mining California Grass Valley. 27653 27653