- Oregon State University. Extension Service2
- United States. Department Of Agriculture2
- University Of Idaho. Cooperative Extension Service2
- Washington State University. Cooperative Extension2
- Brunson, Ed1
- Crawford, W. R.1
- Flatt, Ronald E.1
- Gorham, John R.1
- Hagen, Karl W.1
- Kaiser, Rodney J.1
- Kitchen, James C.1
- Menzies, David W.1
- Moore, James A.1
- Moum, J. N.1
- Oregon State University. Forest Research Laboratory1
- Oregon. Department Of Fish And Wildlife1
- Osborn, T. R.1
- Pacific Northwest Cooperative Extension1
- Pak, Hasong1
- Patton, Nephi M.1