Subject
- Report (United States. Forest Service. Northern Region. Insect and Disease Management)49
- Report (United States. Forest Service. Northern Region. Forest Pest Management)31
- Ponderosa pine -- Diseases and pests14
- Conifers -- Diseases and pests -- Montana13
- Lodgepole pine -- Diseases and pests -- Montana -- Gallatin National Forest11
- Lodgepole pine -- Diseases and pests -- Montana9
- Mountain pine beetle -- Montana -- Gallatin National Forest9
- Pine -- Diseases and pests9
- Conifers -- Diseases and pests -- Idaho8
- Douglas fir -- Diseases and pests -- Montana8
- Mountain pine beetle -- Montana7
- Mountain pine beetle -- Montana -- Lolo National Forest7
- Trees -- Diseases and pests -- Idaho7
- Trees -- Diseases and pests -- Montana7
- Western spruce budworm -- Montana7
- Lodgepole pine -- Diseases and pests -- Montana -- Flathead National Forest6
- Mountain pine beetle -- Kootenai National Forest (Mont. and Idaho)6
- Bark beetles -- Idaho4
- Bark beetles -- Montana4
- Dwarf mistletoes -- Montana4