Subject
- Douglas fir tussock moth -- Montana3
- Douglas fir -- Diseases and pests -- Idaho2
- Douglas fir -- Diseases and pests -- Montana2
- Douglas fir tussock moth -- Idaho2
- Geometridae -- Flathead River Valley (B.C. and Mont)2
- Mountain pine beetle -- Montana -- Crow Indian Reservation2
- Ponderosa pine -- Diseases and pests -- Montana -- Crow Indian Reservation2
- Douglas fir -- Diseases and pests -- Flathead River Valley (B.C. and Mont)1
- Dutch elm disease -- Montana1
- Geometridae -- Flathead River Valley (B.C. and Mont.)1
- Insect surveys -- Idaho1
- Insect surveys -- Montana1
- Mountain pine beetle -- Montana -- Lolo National Forest1
- Ponderosa pine -- Diseases and pests -- Control -- Idaho1
- Ponderosa pine -- Diseases and pests -- Control -- Montana1
- Report (United States. Forest Service. Northern Region. Forest Pest Management)1
- Tortricidae -- Control -- Idaho1
- Tortricidae -- Control -- Montana1
- Trees -- Diseases and pests -- Montana -- Bozeman1
- Western hemlock -- Diseases and pests -- Flathead River Valley (B.C. and Mont)1