Subject
- Agricultural experiment stations -- Oregon1
- Agriculture -- Oregon1
- Apple -- Diseases and pests1
- Apple -- Marketing1
- Apple -- Packing1
- Codling moth -- Control1
- Dairy products1
- Fruit-culture -- Oregon1
- Hood River Branch Experiment Station1
- Irrigation -- Research -- Oregon1
- Land use -- Oregon -- Multnomah County -- Planning1
- Land use -- Oregon -- Yamhill County -- Planning1
- Land use, Rural -- Oregon -- Multnomah County -- Planning1
- Land use, Rural -- Oregon -- Yamhill County -- Planning1
- Regional planning -- Oregon -- Multnomah County1
- Regional planning -- Oregon -- Yamhill County1
- Soil moisture -- Oregon -- Research1
- Spraying and dusting in agriculture1
- Woolly apple aphid1