The geology of part of the Wallowa Mountains,
by C. P. Ross of the United States Geological Survey.
- [Portland, Ore., State Printing Dept., 1938]
- 74 p. illus., maps (1 fold. in pocket) 23 cm.
- Oregon. State Dept. of Geology and Mineral Industries. Bulletin no. 3 .
At head of title: State of Oregon. Department of Geology and Mineral Industries.