Creator
- Oregon State University. Agricultural Experiment Station312
- Oregon State University178
- Oregon State University. Extension Service172
- Oregon Agricultural College. Experiment Station119
- Oregon State College. Agricultural Experiment Station110
- Oregon State Agricultural College. Agricultural Experiment Station108
- Oregon. Dept. Of Geology And Mineral Industries104
- Oregon. State Game Commission97
- Oregon State University. Forest Research Laboratory92
- Forest Products Laboratory (U.S.)69
- Et Al.67
- Oregon State University. College Of Forestry63
- Lane County Historical Society (Or.)54
- Oregon State College. Extension Service52
- U.S. International Biological Program. Coniferous Forest Biome50
- Oregon State University. Water Resources Research Institute44
- Oregon. Department Of Fish And Wildlife42
- United States. Agricultural Research Service42
- Oregon State University. Malheur Experiment Station39
- United States. Forest Service. Northern Region. State & Private Forestry39