00831cam a22002651 4500 gs 11000568 DLC 20260227111312.0 730208m19119999dcu b f000 0 eng gs 11000568 (OCoLC)555653 DLC ODaWU OCoLC ISS OCoLC DLC QE75 .M7 vol. 52 I 19.9:52 Van Hise, Charles Richard, 1857-1918. The geology of the lake Superior region. Washington, Govt. Print. Off., 1911- 641 p. Geological Survey (U.S.). Monographs, v. 52 Bibliography: p. 73-84. Geology Superior, Lake. Iron ores Superior, Lake. Leith, C. K. (Charles Kenneth), 1875-1956. Martin, Lawrence, 1880-1955. 25084 25084