Creator
- Forest Products Laboratory (U.S.)529
- Oregon State University. Agricultural Experiment Station358
- Oregon State University. Extension Service187
- Oregon State University136
- Oregon. Department Of Fish And Wildlife125
- Oregon. State Game Commission116
- Oregon State College. Agricultural Experiment Station107
- Oregon State University. Forest Research Laboratory83
- Oregon State Agricultural College. Agricultural Experiment Station71
- Oregon State University. Water Resources Research Institute69
- Et Al.67
- Oregon. Dept. Of Geology And Mineral Industries67
- Oregon Agricultural College. Experiment Station61
- Oregon State College. Federal Cooperative Extension Service56
- Oregon. Fish Commission51
- United States. Forest Service51
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)50
- U.S. International Biological Program. Coniferous Forest Biome48
- United States. Forest Service. Northern Region. State & Private Forestry40
- United States. Agricultural Research Service37