Creator
- Oregon State University. Extension Service241
- Oregon. State Game Commission147
- Oregon State University133
- Oregon State University. Agricultural Experiment Station128
- Oregon State Agricultural College. Agricultural Experiment Station79
- Forest Products Laboratory (U.S.)75
- Oregon State College. Agricultural Experiment Station74
- Oregon State University. Cooperative Extension Service54
- Oregon. Dept. Of Geology And Mineral Industries42
- Oregon State University. College Of Forestry38
- Lane County Historical Society (Or.)31
- Oregon State University. Forest Research Laboratory31
- Et Al.29
- Spatafora, Joseph W.29
- United States. Agricultural Research Service29
- Oregon State College. Extension Service27
- Columbia Basin Agricultural Research Center26
- Oregon State University. Engineering Experiment Station26
- Pacific Northwest Cooperative Extension25
- United States. Forest Service22