Pacific Northwest mineral occurrences.
Published: 1941
Place of publication: [Washington?
Language: eng
Number of pages: 51
Subjects: Mines and mineral resources -- Northwest, Pacific.
Notes: Cover-title.
Prepared in cooperation with the following agencies: State Dept. of Geology and Mineral Industries, Portland, Oregon; Dept. of Conservation and Development, Division of Mines and Mining. Olympia, Washington; Idaho Bureau of Mines and Geology; Montana School of Mines.