Geology, Hells Canyon National Recreation Area.
Contributors: Wallowa-Whitman National Forest (Or.)
Series: R6-WAW-RG -- 096-91.; R6-WAW-RG -- 096.
Publisher: Wallowa-Whitman National Forest, U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region
Published: 1991
Place of publication: [Baker City, OR]
Language: eng
Subjects: Geology -- Hells Canyon National Recreation Area (Or. and Idaho); Hells Canyon National Recreation Area (Or. and Idaho) -- History.
Notes: Shipping list no.: 91-249-P.