Subject
- Douglas fir -- Diseases and pests -- Oregon10
- Pear -- Diseases and pests -- Control -- Oregon -- Willamette River Valley10
- Root rots10
- Strawberries -- Diseases and pests -- Oregon10
- Walnut -- Diseases and pests10
- Apples -- Diseases and pests -- Control -- Oregon -- Willamette River Valley9
- Blackberries -- Diseases and pests -- Oregon9
- Conifers -- Diseases and pests9
- Grapes -- Diseases and pests9
- Grapes -- Diseases and pests -- Oregon9
- Lodgepole pine -- Diseases and pests -- Montana9
- Mountain pine beetle -- Montana -- Gallatin National Forest9
- Pine -- Diseases and pests9
- Trees -- Diseases and pests -- Oregon9
- Agricultural pests -- Control -- Willamette River Valley (Or.)8
- Blueberries -- Diseases and pests -- Control -- Oregon -- Willamette River Valley8
- Cherry -- Diseases and pests -- Control -- Oregon -- Willamette River Valley8
- Douglas fir -- Diseases and pests -- Montana8
- Peach -- Diseases and pests -- Control -- Oregon8
- Peach -- Diseases and pests -- Integrated control -- Oregon8