Subject
- Apple industry -- Labor productivity -- Oregon -- Hood River Valley1
- Apple industry -- Oregon -- Hood River Valley1
- Child agricultural laborers -- Oregon -- Willamette River Valley1
- Fruit trade -- Oregon -- Willamette River Valley -- Labor productivity1
- Hops -- Harvesting -- Oregon -- Willamette River Valley -- Employees1
- Pear industry -- Labor productivity -- Oregon -- Hood River Valley1
- Pear industry -- Oregon -- Hood River Valley1
- Potato industry -- Oregon -- Klamath County -- Labor productivity1
- Sour cherry -- Harvesting -- Oregon -- Employees1
- Sweet cherry -- Harvesting -- Oregon -- Willamette River -- Employees1
- Tomato industry -- Oregon -- Willamette River Valley -- Labor productivity1