Manganese in Oregon
By: by F. W. Libbey, J. E. Allen, Ray C. Treasher [and] H. K. Lancaster.
Contributors: Allen, John Eliot, 1908- joint author.; Treasher, Raymond Clarence, 1898- joint author.; Lancaster, Hugh Kenneth, 1907-
Published: 1942
Place of publication: [Portland, Or.]
Language: eng
Number of pages: 78
Subjects: Manganese ores -- Oregon.
Notes: Bibliography: p. 73-74.
At head of title: State of Oregon.  Dept. of Geology and Mineral Industries.
Reproduced from type-written copy.