Subject
- U.S. International Biological Program. Coniferous Forest Biome3
- Douglas fir -- Diseases and pests -- Washington (State), Western2
- Douglas fir beetle -- Washington (State), Western2
- Report (United States. Forest Service. Northern Region. Forest Pest Management)2
- Aerial spraying and dusting in forestry -- Montana1
- Douglas fir -- Diseases and pests -- Control -- Montana1
- Douglas fir -- Diseases and pests -- Montana -- Flathead National Forest1
- Douglas fir -- Diseases and pests -- Montana -- Kootenai National Forest1
- Douglas fir -- Diseases and pests -- Washington (State) -- Cedar Falls1
- Douglas fir -- Diseases and pests -- Washington (State) -- Identification1
- Douglas fir beetle -- Washington (State) -- Cedar Falls1
- Dwarf mistletoes -- Montana -- Flathead National Forest1
- Dwarf mistletoes -- Montana -- Kootenai National Forest1
- Forest insects -- Washington (State) -- Cedar Falls1
- Forest insects -- Washington (State) -- Identification1
- Hymenoptera -- Washington (State) -- Identification1
- Insect communities -- Washington (State)1
- Insect-plant relationships -- Washington (State) -- Cedar Falls1
- Lodgepole pine -- Diseases and pests -- Montana -- Flathead National Forest1
- Lodgepole pine -- Diseases and pests -- Montana -- Kootenai National Forest1