Subject
- Agriculture -- Economic aspects -- Oregon22
- Agriculture -- Economic aspects4
- Agriculture -- Economic aspects -- Oregon -- Jefferson County4
- Agriculture -- Oregon4
- Agriculture -- Economic aspects -- Oregon -- Willamette River Valley3
- Irrigation farming -- Economic aspects -- Oregon -- Jefferson County3
- Agriculture -- Economic aspects -- Oregon -- Statistics2
- Farm produce -- Oregon2
- Oregon -- Economic conditions2
- Wheat -- Oregon2
- Agricultural chemicals1
- Agricultural conservation -- Oregon -- Willamette River Valley -- Economic aspects1
- Agricultural conservation -- Oregon -- Willamette River Valley -- Evaluation1
- Agricultural credit1
- Agricultural ecology -- Oregon -- Malheur County -- Mathematical models1
- Agricultural pollution -- Oregon1
- Agricultural pollution -- Oregon -- Willamette River Valley1
- Agricultural price supports -- Decision-making1
- Agricultural prices -- Oregon1
- Agricultural systems -- Oregon -- Malheur County -- Mathematical models1