Creator
- Oregon. Dept. Of Geology And Mineral Industries127
- Oregon State University. Extension Service112
- Oregon State University. Agricultural Experiment Station105
- Oregon. State Game Commission71
- Youngberg, Harold Wayne, 1929 57
- Forest Products Laboratory (U.S.)50
- Oregon State College. Extension Service49
- Oregon State University43
- Oregon State University. College Of Forestry34
- United States. Agricultural Research Service33
- United States. Forest Service32
- Oregon State College. Agricultural Experiment Station27
- Oregon State University. Forest Research Laboratory27
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club27
- Oregon Agricultural College. Experiment Station26
- U.S. International Biological Program. Coniferous Forest Biome26
- Mason, Ralph S.22
- Oregon. Department Of Fish And Wildlife20
- Oregon. Wildlife Commission20
- Newton, Vernon C.18