Subject
- Abandoned mined lands reclamation -- Social aspects -- Oregon -- Willamette River Valley1
- Abscisic acid1
- Absentee fathers -- Family relationships1
- Actin1
- Actinomycin1
- Adhesives1
- Adhesives -- Testing1
- Advertising -- Brewing industry -- United States1
- Advertising -- Cigarette industry -- Law and legislation -- United States1
- Aged women -- Health and hygiene1
- Aged women -- Nutrition3
- Aggregate industry -- Environmental aspects -- Oregon -- Willamette River Valley1
- Aging -- Genetic aspects1
- Aging -- Physiological aspects1
- Aging -- Psychological aspects1
- Agricultural ecology -- Oregon -- Willamette River Valley1
- Agricultural education -- United States1
- Agricultural mathematics -- Study and teaching (Secondary) -- United States1
- Agricultural pests -- Integrated control1
- Agricultural pollution2