- Oregon State University. Extension Service8
- U.S. International Biological Program. Coniferous Forest Biome8
- University Of Washington7
- United States. Forest Service. Pacific Northwest Region6
- Filip, Gregory M.5
- Emmingham, William H.4
- Oregon State University. Agricultural Experiment Station4
- Campbell, Allan, 1936 3
- Diaz, Nancy M.3
- Dyrness, C. T.3
- Eastern Oregon Agricultural Research Center3
- Kanaskie, Alan3
- Oregon State University. Forest Research Laboratory3
- Bondi, Michael C.2
- Franklin, Jerry F.2
- Halverson, Nancy M.2
- Hemstrom, Miles A.2
- Johnson, Charles G.2
- May, Christine L.2
- Parsons, Roger Bruce, 1932 2