Subject
- Abies lasiocarpa -- Diseases and pests -- Montana -- Gallatin National Forest1
- Douglas fir -- Diseases and pests -- Montana -- Gallatin National Forest1
- Engelmann spruce -- Diseases and pests -- Montana -- Flathead National Forest1
- Engelmann spruce -- Diseases and pests -- Montana -- Gallatin National Forest1
- Lodgepole pine -- Diseases and pests -- Montana -- Gallatin National Forest1
- Mountain pine beetle -- Montana -- Gallatin National Forest1
- Report (United States. Forest Service. Northern Region. Forest Pest Management)1
- Spruce beetle -- Montana -- Flathead National Forest1