01264cam a22003491 4500 gs 42000120 DLC 20260227111347.0 780905s1942 orub b s001 0 eng c gs 42000120 (OCoLC)4198139 U.S. Geol. Survey Libr. NcRS NcRS OCoLC DLC premarc n-us-or x4x4 QE155 .A3 no. 17 TN490.M3 L5 Copy 2. 553.46 Libbey, Fay Wilmott, 1882- Manganese in Oregon, by F. W. Libbey, J. E. Allen, Ray C. Treasher [and] H. K. Lancaster. [Portland, Or.] 1942. iii, 78 p. maps. 28 cm. Oregon. Dept. of Geology and Mineral Industries Bulletin no. 17 At head of title: State of Oregon. Dept. of Geology and Mineral Industries. Reproduced from type-written copy. Bibliography: p. 73-74. Manganese ores Oregon. Allen, John Eliot, 1908- joint author. Treasher, Raymond Clarence, 1898- joint author. Lancaster, Hugh Kenneth, 1907- Oregon. Department of Geology and Mineral Industries. Bulletin no. 17. 27789 27789