Subject
- Agriculture -- Economic aspects -- Oregon -- Jefferson County4
- Irrigation farming -- Economic aspects -- Oregon -- Jefferson County3
- Dry farming -- Economic aspects -- Oregon -- Wasco County2
- Forest management -- Economic aspects -- Oregon -- Douglas County2
- Wheat -- Economic aspects -- Oregon -- Wasco County2
- Agricultural credit1
- Agricultural ecology -- Oregon -- Malheur County -- Mathematical models1
- Agricultural pollution -- Economic aspects -- Oregon -- Malheur County1
- Agricultural systems -- Oregon -- Malheur County -- Mathematical models1
- Agriculture -- Economic aspects1
- Agriculture -- Economic aspects -- Oregon -- Linn County1
- Agriculture -- Economic aspects -- Oregon -- Malheur County -- Mathematical models1
- Agriculture -- Economic aspects -- Oregon -- Marion County1
- Agriculture -- Economic aspects -- Oregon -- Wasco County1
- Agriculture -- Oregon1
- Agriculture -- Oregon -- Baker County -- Economic aspects1
- Alternative agriculture -- Oregon -- Malheur County -- Mathematical models1
- Biodiesel fuels -- Economic aspects -- Oregon -- Benton County1
- Biodiesel fuels -- Economic aspects -- Oregon -- Linn County1
- Bites and stings -- Economic aspects -- Oregon -- Benton County1