Subject
- Agriculture -- Oregon12
- Oregon Agricultural College. Experiment Station5
- Agriculture -- Oregon -- Experimentation4
- Fertilizers -- Oregon4
- Agricultural experiment stations -- Oregon2
- Drainage -- Oregon2
- Fruit-culture -- Oregon2
- Pruning2
- Soils -- Oregon2
- Swine -- Feeding and feeds2
- Walnut -- Drying2
- Agricultural experiment stations1
- Agricultural laborers -- Oregon1
- Agricultural machinery1
- Alfalfa -- Oregon -- Fertilizers1
- Alfalfa -- Oregon, Western1
- Apple -- Composition1
- Apple -- Diseases and pests -- Control1
- Apple -- Diseases and pests -- Control -- Oregon1
- Apple -- Diseases and pests -- Oregon1