Subject
- Forests and forestry -- Research -- Oregon55
- American wood52
- 4-H clubs48
- Agriculture -- Oregon -- Statistics46
- Farm produce -- Oregon -- Statistics46
- Reforestation -- Oregon46
- Forest influences43
- Oregon -- Climate43
- Agriculture -- Oregon36
- Wood -- United States36
- Forests and forestry -- Oregon30
- Forest surveys -- Oregon27
- Forests and forestry -- Oregon -- Statistics27
- Forests and forestry -- Washington (State) -- Statistics26
- Forests and forestry -- Washington (State)25
- Forest surveys -- Washington (State)23
- Agriculture17
- Fish-culture -- Oregon -- Statistics14
- Fishery management -- Oregon -- Statistics14
- Fishing -- Oregon -- Statistics14