Subject
- Agriculture -- Columbia River Watershed -- Periodicals1
- Agriculture -- Columbia River Watershed -- Statistics -- Periodicals1
- Alfalfa -- Oregon -- Willamette River Valley1
- Apple-maggot -- Oregon1
- Apples -- Diseases and pests -- Oregon1
- Columbia Basin Agricultural Research Center -- Periodicals1
- Consumer education1
- Consumers1
- Douglas fir1
- Farm buildings1
- Farms -- Fires and fire prevention1
- Feces -- Microbiology -- Oregon -- Tillamook Bay1
- Fisheries -- Somalia1
- Fishery management -- Somalia1
- Fishing -- Oregon1
- Frozen fruit1
- Frozen vegetables1
- Hazelnuts -- Oregon1
- Hunting -- Oregon1
- Illinois River (Or.) -- Recreational use1