Subject
- Reforestation -- Oregon[remove]68
- Forests and forestry -- Research -- Oregon45
- Reforestation -- California, Northern11
- Rodenticides2
- Brush -- Control -- Oregon1
- Conifers -- Reproduction -- Oregon1
- Douglas fir -- Diseases and pests -- Oregon1
- Douglas fir -- Seedlings1
- Douglas fir -- Seeds -- Oregon1
- Forest animals -- Oregon1
- Forest regeneration -- Oregon1
- Forests and forestry1
- Forests and forestry -- Oregon1
- Granivores -- Control -- Oregon1
- Herbicides -- Application -- Oregon1
- Pine -- Diseases and pests -- Control -- Oregon1
- Plant-soil relationships1
- Ponderosa pine -- Seedlings -- Oregon1
- Ponderosa pine -- Seeds -- Oregon1
- Prescribed burning -- Oregon1