Subject
- Codling moth -- Control -- Oregon5
- Codling moth -- Control -- Oregon -- Willamette River Valley2
- Agricultural pests -- Control -- Congresses1
- Apples -- Diseases and pests -- Control -- Oregon1
- Apples -- Diseases and pests -- Control -- Oregon, Western1
- Cinnabar moth -- Environmental aspects -- Oregon, Western1
- Codling moth -- Control -- Oregon -- Umatilla County1
- Codling moth -- Control -- Oregon, Western1
- Codling moth -- Effect of insecticides on -- Oregon1
- Codling moth -- Oregon1
- Gelechiidae -- Control -- Oregon -- Umatilla County1
- Pear -- Diseases and pests -- Control -- Oregon1
- Prune -- Diseases and pests -- Control -- Oregon -- Umatilla1
- Pyralidae -- Control -- Oregon -- Umatilla County1
- Tansy ragwort -- Biological control -- Environmental aspects -- Oregon, Western1