Subject
- Agriculture -- Economic aspects -- Oregon3
- Agricultural pollution -- Oregon1
- Agriculture -- Economic aspects1
- Agriculture -- Economic aspects -- Kansas1
- Agriculture -- Economic aspects -- Oregon -- Jefferson County1
- Agriculture -- Economic aspects -- Oregon -- Wasco County1
- Agriculture -- Economic aspects -- Oregon -- Willamette River Valley1
- Farm management -- Computer programs1
- Insurance, Agricultural -- Oregon1
- Irrigation farming -- Economic aspects -- Oregon -- Jefferson County1
- Natural resources -- Oregon1
- Nitrates -- Environmental aspects1
- Oregon -- Economic conditions1
- Waterfowl management -- Oregon -- Case studies1
- Wildlife habitat improvement -- Oregon -- Case studies1