Subject
- Agriculture and state -- Environmental aspects -- Oregon -- Willamette River Valley1
- Agriculture and state -- Oregon1
- Agriculture and state -- Tunisia -- Econometric models1
- Air -- Pollution -- Government policy -- Economic aspects -- United States1
- Airlines -- Mergers -- Economic aspects -- United States1
- Airlines -- Mergers -- Government policy -- Economic aspects -- United States1
- Airlines -- Rates -- United States1
- Airlines -- United States -- Econometric models1
- Alaska Natives -- Health and hygiene1
- Alaska Natives -- Health and hygiene -- Economic aspects1
- Alaska Natives -- Medical care1
- Alaska Natives -- Medical care -- Economic aspects1
- Alienation (Social psychology) -- United States1
- Aluminum industry and trade -- Economic aspects -- Mexico1
- Aluminum industry and trade -- Economic aspects -- United States1
- Antitrust law -- United States1
- Attachment behavior -- Economic aspects -- United States1
- Beef -- Japan -- Economic aspects1
- Beef cattle -- Economic aspects -- United States1
- Beef industry -- Economic aspects -- United States1