Subject
- Forests and forestry -- Oregon80
- Forests and forestry -- Research -- Oregon78
- Reforestation -- Oregon68
- Forest influences59
- Oregon -- Climate59
- Oregon State University. College of Forestry58
- Wood poles -- Preservation28
- Forests and forestry27
- Wood poles -- Maintenance and repair26
- Wood poles -- Fumigation23
- Forest products -- Research -- Oregon19
- Oregon State University. Forest Research Laboratory19
- Douglas fir18
- Starker lectures16
- Forest management -- Research -- Oregon12
- Herbicides -- Research -- Oregon12
- Reforestation -- California, Northern11
- Forests and forestry -- Measurement8
- Forests and forestry -- Oregon -- Measurement8
- Herbicides -- Oregon8