Subject
- Report (United States. Forest Service. Northern Region. Insect and Disease Management)50
- Lodgepole pine -- Diseases and pests -- Montana -- Gallatin National Forest10
- Mountain pine beetle -- Montana -- Gallatin National Forest10
- Western spruce budworm -- Montana7
- Conifers -- Diseases and pests -- Idaho6
- Mountain pine beetle -- Montana -- Lolo National Forest6
- Mountain pine beetle -- Kootenai National Forest (Mont. and Idaho)5
- Conifers -- Diseases and pests -- Montana4
- Douglas fir -- Diseases and pests -- Montana4
- Insect surveys -- Montana4
- Lodgepole pine -- Diseases and pests -- Montana -- Flathead National Forest4
- Lodgepole pine -- Diseases and pests -- Yellowstone National Park4
- Mountain pine beetle -- Montana -- Flathead National Forest4
- Mountain pine beetle -- Montana -- Glacier National Park4
- Mountain pine beetle -- Yellowstone National Park4
- Ponderosa pine -- Diseases and pests -- Montana -- Flathead Indian Reservation4
- Western spruce budworm -- Idaho4
- Conifers -- Diseases and pests -- Idaho -- Nezperce National Forest3
- Douglas fir -- Diseases and pests -- Yellowstone National Park3
- Douglas fir tussock moth -- Idaho3