Mineral resources of the Lower John Day and Thirtymile Wilderness Study Areas, Sherman and Gilliam counties, Oregon.  By Jay A. Ach [and others]
Contributors: Ach, J.A.
Publisher: Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 18
Subjects: Mines and mineral resources - Oregon - Lower John Day Wilderness; Mines and mineral resources - Oregon - Thirtymile Wilderness
Notes: 11