Subject
- Agricultural experiment stations -- Oregon1
- Agriculture -- Oregon1
- Apple -- Oregon -- Hood River Valley -- Thinning1
- Apple industry -- Oregon -- Hood River Valley1
- Apples -- Wounds and injuries -- Oregon -- Hood River Valley1
- Fruit -- Oregon -- Fertilizers1
- Hood River Branch Experiment Station1
- Pear -- Pollination -- Oregon -- Hood River Valley1
- Pear -- Pruning1
- Pear -- Wounds and injuries -- Oregon -- Hood River Valley1
- Plants, Effect of cold on1
- Plants, Effect of cold on -- Oregon1
- Potatoes -- Fertilizers -- Oregon -- Hood River Valley1
- Strawberries -- Oregon -- Fertilizers1
- Strawberries -- Oregon -- Field experiments1
- Trees -- Wounds and injuries -- Oregon1