Subject
- 4-H clubs53
- Forest influences50
- Forests and forestry -- Research -- Oregon50
- Oregon -- Climate50
- Reforestation -- Oregon46
- Forests and forestry -- Oregon41
- Forests and forestry -- Washington (State) -- Statistics41
- Forests and forestry -- Washington (State)40
- American wood38
- Forest surveys -- Oregon38
- Forest surveys -- Washington (State)38
- Forests and forestry -- Oregon -- Statistics38
- Agriculture -- Oregon -- Statistics37
- Farm produce -- Oregon -- Statistics37
- Agriculture -- Oregon34
- Wood -- United States28
- Fences -- Design and construction16
- Wood poles -- Preservation16
- Fish-culture -- Oregon -- Statistics14
- Fishery management -- Oregon -- Statistics14