Creator
- Oregon. State Game Commission209
- Oregon State University. Agricultural Experiment Station146
- Forest Products Laboratory (U.S.)136
- Oregon State Agricultural College. Agricultural Experiment Station131
- Oregon State University. Extension Service119
- Oregon State University102
- Oregon State College. Agricultural Experiment Station101
- Oregon Agricultural College. Experiment Station75
- Oregon. Department Of Fish And Wildlife72
- Oregon State University. Forest Research Laboratory60
- Oregon State University. College Of Forestry46
- Et Al.45
- Oregon. Fish Commission45
- Oregon State College. Extension Service43
- Oregon State University. Water Resources Research Institute33
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)33
- United States. Forest Service33
- Institute For Natural Resources29
- Oregon State College. Federal Cooperative Extension Service28
- Oregon State University. Engineering Experiment Station27