Subject
- Apple -- Diseases and pests -- Oregon5
- Insect pests -- Oregon3
- Wheat -- Diseases and pests -- Oregon3
- Apple -- Diseases and pests -- Control -- Oregon2
- Cherry -- Diseases and pests -- Oregon2
- Peach -- Diseases and pests -- Oregon2
- Pear -- Diseases and pests -- Control -- Oregon2
- Pear -- Diseases and pests -- Oregon2
- Prune -- Diseases and pests -- Oregon2
- Aphididae -- Oregon1
- Apple-tree borers -- Oregon1
- Apples -- Diseases and pests -- Control -- Oregon1
- Blackberries -- Diseases and pests -- Oregon1
- Borers (Insects) -- Oregon1
- Brown rot of fruit -- Oregon1
- Bunt (Disease of wheat)1
- Canker (Plant disease)1
- Cereal smut diseases -- Oregon1
- Cherry fruit-fly -- Oregon1
- Codling moth -- Control -- Oregon1