Title: Reconnaissance geologic map of the Oregon part of the Grangeville quadrangle, Baker, Union, Umatilla, and Wallowa Counties, Oregon /
Authors: Walker, George Walton, 1921-; Geological Survey (U.S.)
Publisher: U.S. Geological Survey,
Year: 1979
Subjects: Geology Oregon Baker County Maps.; Geology Oregon Union County Maps.; Geology Oregon Umatilla County Maps.; Geology Oregon Wallowa County Maps.; Baker County (Or.) Maps.; Union County (Or.) Maps.; Umatilla County (Or.) Maps.; Wallowa County (Or.) Maps.