Subject
- Douglas fir5
- Cooking (Eggs)2
- Cutover lands -- Oregon -- Clatsop County2
- Douglas fir -- Pruning2
- Eggs as food2
- Fire weather2
- Forest fires -- Northwest, Pacific -- Prevention and control2
- Forest fires -- Prevention and control2
- Forest fires -- Prevention and control -- Study and teaching2
- Forest site quality2
- Lichens2
- Logging2
- McDonald Forest (Or.)2
- Plant hormones2
- Prairie States Forestry Project (U.S.)2
- Radio in agriculture2
- Slashburning -- Northwest, Pacific2
- Soil acidity2
- Soil erosion2
- Trees -- Growth2