Books by B. S. Butler:
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Butler, B. S. (Bert Sylvenus), 1877-1960: The Copper Deposits of Michigan (USGS professional paper 144; Washington: GPO, 1929), also by W. S. Burbank (page images at HathiTrust)
Additional books by B. S. Butler in the extended shelves:
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Butler, B. S. (Bert Sylvenus), 1877-1960: Geology and ore deposits of the San Francisco and adjacent district, Utah (U.S. Gov't. Print. Off., 1913) (page images at HathiTrust)- Butler, B. S. (Bert Sylvenus), 1877-1960: Ore deposits of Utah (Govt. Print. Off., 1920), also by V. C. Heikes and G. F. Loughlin (page images at HathiTrust)
- Butler, B. S. (Bert Sylvenus), 1877-1960: Potash in certain copper and gold ores. (Govt. Print. Off., 1915), also by George Steiger (page images at HathiTrust)
- Butler, B. S. (Bert Sylvenus), 1877-1960: The production of copper in 1910 (Govt. Print. Off., 1911), also by United States Bureau of Mines (page images at HathiTrust)
Find more by B. S. Butler at your library, or elsewhere.