Subject
- Agriculture -- Oregon39
- Dairy cattle -- Feeding and feeds11
- Agricultural experiment stations -- Oregon8
- Apple industry -- Oregon -- Hood River Valley -- Cost of operation8
- Pear industry -- Oregon -- Hood River Valley -- Cost of operation8
- Oregon Agricultural Experiment Station7
- Fruit-culture -- Oregon -- Hood River Valley -- Cost of operation6
- Blackberries -- Diseases and pests -- Control -- Oregon5
- Blackberries -- Diseases and pests -- Oregon5
- DDT (Insecticide)5
- Strawberries -- Diseases and pests -- Oregon5
- Weeds -- Control5
- Agriculture -- Research -- Oregon4
- Beets -- Diseases and pests -- Control -- Oregon4
- Beets -- Diseases and pests -- Nutritional aspects -- Oregon4
- Cherry -- Diseases and pests -- Control -- Oregon4
- Cherry fruit-fly4
- Cherry fruit-fly -- Control -- Oregon4
- Corn -- Varieties -- Oregon, Western -- Evaluation4
- Currants -- Diseases and pests4