- Oregon State University. Extension Service19
- Burridge, Judith Steele7
- United States. Forest Service. Northern Region. State & Private Forestry7
- Gibson, Kenneth E.6
- Oakes, Robert D.5
- Oregon State University. Agricultural Experiment Station5
- Oregon State University. Water Resources Research Institute5
- United States. Forest Service. Northern Region5
- Elliott, Catherine4
- Mcgregor, Mark D.4
- Simon Brown, Viviane4
- Apel, Mark3
- Forest, Judith3
- Glenn, Erik3
- Hatfield Marine Science Center3
- Institute For Natural Resources3
- Oregon. Natural Area Preserves Advisory Committee3
- Pacific Northwest Cooperative Extension3
- Prichard, Jon3
- Rashash, Diana3