Creator
- Oregon State University. Extension Service268
- Oregon State University. Agricultural Experiment Station193
- Oregon State University112
- Oregon. Department Of Fish And Wildlife101
- Oregon. State Game Commission76
- Forest Products Laboratory (U.S.)69
- Oregon State University. College Of Forestry61
- Oregon State University. Forest Research Laboratory60
- Oregon State College. Federal Cooperative Extension Service54
- United States. Forest Service. Northern Region. State & Private Forestry47
- Mcgregor, Mark D.45
- Oregon. Dept. Of Geology And Mineral Industries40
- United States. Forest Service40
- United States. Agricultural Research Service39
- Oregon. Fish Commission38
- Oregon Agricultural College. Experiment Station37
- Oregon State University. Water Resources Research Institute36
- Et Al.34
- Oregon State College. Agricultural Experiment Station32
- Oregon State College. Extension Service32