Subject
- Ponderosa pine -- Oregon9
- Ponderosa pine4
- Ponderosa pine -- Growth4
- Ponderosa pine -- Oregon -- Growth4
- Douglas fir -- Oregon -- Growth3
- Plant competition -- Oregon3
- Forest management -- Oregon, Eastern2
- Forest site quality -- Oregon2
- Forests and forestry -- Oregon2
- Plant-water relationships -- Oregon2
- Ponderosa pine -- Climatic factors -- Oregon2
- Ponderosa pine -- Oregon, Eastern2
- Ponderosa pine -- Seedlings -- Ecophysiology -- Oregon2
- Ponderosa pine -- Seedlings -- Oregon2
- Prescribed burning -- Oregon2
- Reforestation -- Oregon2
- Abies grandis -- Cascade Range -- Growth1
- Andosols -- Oregon1
- Arctostaphylos -- Growth1
- Bark beetles -- Control -- Oregon -- Pringle Falls Experimental Forest.1