Creator
- Oregon State University. Agricultural Experiment Station522
- Oregon State University. Extension Service421
- Oregon State College. Agricultural Experiment Station145
- Oregon. Dept. Of Geology And Mineral Industries135
- Oregon State University. Forest Research Laboratory127
- Forest Products Laboratory (U.S.)102
- Oregon State University. Cooperative Extension Service90
- United States. Agricultural Research Service73
- Oregon State University. Water Resources Research Institute72
- Oregon. Department Of Fish And Wildlife69
- Oregon. State Game Commission68
- Oregon Agricultural College. Experiment Station63
- Oregon State College. Extension Service61
- Oregon State Agricultural College. Agricultural Experiment Station59
- Et Al.56
- United States. Forest Service54
- Oregon State University53
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)53
- U.S. International Biological Program. Coniferous Forest Biome46
- Oregon State College. Federal Cooperative Extension Service45