01236cam a22002891 4500 gs 29000034 DLC 20260227111333.0 801204s1929 dcuabf b f001 0 eng c gs 29000034 (OCoLC)6997748 U.S. Geol. Survey. Libr. NcGrE DLC n-us-mi QE75 .P9 no. 144 TN443.M5 B8 Copy 2. Butler, B. S. (Bert Sylvenus), 1877-1960. The copper deposits of Michigan, by B. S. Butler and W. S. Burbank, in collaboration with T. M. Broderick, L. E. Graton, C. D. Hohl, Charles Palache, M. J. Scholz, ALfred Wandke and R. C. Wells. Washington, Govt. Print. Off., 1929. xii, 238 p. incl. illus., tables diagrs. 75 pl. (incl. 52 fold. maps and diagrs. in separate pocket) fold. tab. 29 cm. Geological Survey (U.S.) Professional paper 144 At head of title: Department of the Interior. Maps and sections (pl. 2-52) in separate portfolio. Bibliography: p. 3-14. Copper ores Michigan. Copper mines and mining Michigan. Burbank, W. S. (Wilbur Swett), 1898-1975. 26692 26692