Without a trace
Subtitle: the wilderness challenge
Contributors: United States. Forest Service. Pacific Northwest Region
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region
Published: 1991
Place of publication: [Portland, Or.]
Language: eng
Subjects: Wilderness areas -- Recreational use -- United States.; Environmental protection -- United States
Other titles: Wilderness challenge
Notes: Shipping list no.: 91-412-P