Subject
- Agriculture -- Economic aspects -- Oregon12
- Agriculture -- Economic aspects6
- Agriculture -- Economic aspects -- Mathematical models4
- Agriculture -- Economic aspects -- Oregon -- Jefferson County3
- Agriculture -- Economic aspects -- Thailand3
- Agriculture -- Economic aspects -- Oregon -- Willamette River Valley2
- Farm management2
- Industries -- Oregon2
- Oregon -- Economic conditions2
- Water resources development -- Northwest, Pacific2
- Wheat -- Oregon2
- Agricultural chemicals1
- Agricultural credit1
- Agricultural credit -- Columbia River Watershed1
- Agricultural machinery -- Maintenance and repair1
- Agricultural price supports -- Venezuela1
- Agricultural prices -- Oregon1
- Agriculture -- Costs1
- Agriculture -- Economic aspects -- California1
- Agriculture -- Economic aspects -- China1