Creator
- Oregon State University. Extension Service54
- Oregon State University. Agricultural Experiment Station43
- Oregon. Dept. Of Geology And Mineral Industries39
- U.S. International Biological Program. Coniferous Forest Biome26
- Lane County Historical Society (Or.)23
- Oregon. Department Of Fish And Wildlife18
- Upper Willamette Resource Conservation And Development Project18
- University Of Washington15
- Oregon State University. Forest Research Laboratory14
- Oregon State University. Water Resources Research Institute13
- Ruttle, Marilyn13
- Valde, Gary13
- Welch, E. B. (Eugene B.)10
- Mason, Ralph S.9
- Oregon State University. Cooperative Extension Service9
- United States. Soil Conservation Service9
- Osu Forestry Alumni Association8
- Oregon. Wildlife Commission7
- Scharback, Ron7
- Frenkel, Robert E.6