Subject
- Agriculture -- Oregon2
- Agriculture -- Oregon -- Experimentation2
- Byturidae -- Northwest, Pacific2
- Currants -- Diseases and pests2
- Gooseberries -- Diseases and pests2
- Oregon Agricultural College. Experiment Station2
- Oregon State Agricultural College. Agricultural Experiment Station2
- Pear -- Diseases and pests -- Oregon2
- Raspberries -- Diseases and pests -- Northwest, Pacific2
- Aerial spraying and dusting in agriculture1
- Alfalfa -- Oregon -- Willamette River Valley1
- Alfalfa weevil -- Control1
- Apple -- Diseases and pests -- Oregon1
- Apples -- Cleaning -- Equipment and supplies1
- Apples -- Diseases and pests -- Control -- Oregon1
- Apples -- Harvesting -- Oregon -- Hood River Valley1
- Apples -- Processing -- Machinery1
- Apples -- Storage -- Oregon -- Hood River Valley1
- Bark beetles -- Control -- West (U.S.)1
- Codling moth -- Control -- Oregon1