Subject
- 4-H clubs114
- Agriculture -- Oregon -- Statistics53
- Farm produce -- Oregon -- Statistics50
- Reforestation -- Oregon47
- Forests and forestry -- Research -- Oregon43
- Range plants -- Oregon43
- Spraying and dusting in agriculture -- Oregon -- Willamette River Valley25
- Pesticides -- Application -- Oregon -- Willamette River Valley24
- Child rearing13
- Cover crops -- Oregon13
- Grapes -- Diseases and pests -- Control -- Oregon12
- Spraying and dusting in agriculture -- Oregon12
- Viticulture -- Oregon11
- Agricultural estimating and reporting -- Oregon9
- Catalogs, Publishers' -- Oregon8
- Child development8
- College publications -- Oregon8
- Forests and forestry -- Measurement8
- Fungicides -- Oregon8
- Peach -- Diseases and pests -- Integrated control -- Oregon8