Subject
- Conifers -- Oregon -- Growth6
- Conifers -- Diseases and pests -- Oregon5
- Root rots -- Oregon4
- Conifers -- Oregon -- Growth -- Mathematical models3
- Fungal diseases of plants -- Oregon3
- Report (United States. Forest Service. Northern Region. Forest Pest Management)3
- Conifers -- Diseases and pests2
- Conifers -- Diseases and pests -- Control -- Oregon2
- Conifers -- Diseases and pests -- Idaho2
- Conifers -- Diseases and pests -- Montana2
- Conifers -- Oregon -- Seedlings2
- Douglas fir -- Diseases and pests -- Oregon2
- Forests and forestry -- Oregon2
- Forests and forestry -- Oregon -- Measurement2
- Gaeumannomyces graminis -- Control -- Oregon2
- Phellinus -- Oregon2
- Phellinus weirii2
- Plant-fungi relationships -- Oregon2
- Reforestation -- Oregon2
- Root rots2