Creator
- Oregon. Dept. Of Geology And Mineral Industries124
- Oregon State University. Extension Service110
- Oregon State University. Agricultural Experiment Station89
- Oregon. State Game Commission72
- Youngberg, Harold Wayne, 1929 57
- Forest Products Laboratory (U.S.)56
- Oregon State College. Extension Service50
- Oregon State University43
- Oregon State University. College Of Forestry41
- United States. Forest Service34
- Oregon State College. Agricultural Experiment Station30
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club27
- Oregon Agricultural College. Experiment Station26
- United States. Agricultural Research Service26
- Mason, Ralph S.21
- Oregon. Department Of Fish And Wildlife20
- Oregon. Wildlife Commission20
- Betts, Harold S. (Harold Scofield)19
- Newton, Vernon C.17
- Zald, Harold S. J.17