Creator
- Keszler, Douglas A.14
- Maguire, Douglas A. (Douglas Alan)13
- Caldwell, Douglas R.11
- Oregon State University. Extension Service11
- Maguire, Douglas A.10
- Angima, S. D.9
- Campbell, Steve9
- Dobkowski, Alexander9
- Grizzel, Jeffrey D.9
- Harrison, Robert B.9
- Heninger, Ronald L.9
- Miller, Richard E.9
- Page Dumroese, Deborah S.9
- Scott, William9
- Terry, Thomas A.9
- Zabowski, D.9
- Hart, Douglas A.6
- Kelt, Douglas A.6
- Meyer, Marc D.6
- Moum, James N.6