- Oregon State College. Federal Cooperative Extension Service6
- Oregon State University. Agricultural Experiment Station6
- Oregon State University. Extension Service6
- Breithaupt, L. R. (Le Roy), 1886 5
- Myers, James R.5
- Thomas, M. D.5
- Yorgey, Brian5
- Nielsen, N. I.4
- Youngberg, Harold Wayne, 1929 4
- Chilcote, David O.3
- Oregon Forest Lands Research Center3
- Oregon State Board Of Forestry3
- Young, William C. (William Clyde)3
- Conklin, Frank S.2
- Greene, Charles H. (Charles Henry), 1932 2
- Oregon State College. Agricultural Experiment Station2
- Silberstein, Thomas B.2
- Allen, Donald G.1
- Borum, C. J.1
- Chowdhury, Masudul Hoq1