Author
United States. Forest Service,
6
Geometronics Service Center (U.S.)
2
United States. Forest Service
2
United States. Forest Service. Pacific Northwest Region
2
Crooked River National Grassland (Agency : U.S.),
1
Deschutes National Forest (Agency : U.S.),
1
Ochoco National Forest (Agency : U.S.),
1
United States. Department of the Interior
1