Creator
- Oregon State University. Extension Service120
- Oregon Agricultural College. Experiment Station96
- Oregon State University. Agricultural Experiment Station84
- Oregon State University51
- Oregon State College. Extension Service44
- Oregon. State Game Commission41
- Lane County Historical Society (Or.)27
- Oregon State College. Agricultural Experiment Station27
- Oregon State University. Malheur Experiment Station25
- Et Al.21
- Oregon State University. College Of Forestry19
- Oregon State University. Forest Research Laboratory19
- Oregon. Department Of Fish And Wildlife19
- Forest Products Laboratory (U.S.)18
- Southwest Oregon Forestry Intensified Research Program. Adaptive Phase18
- Lewis, C. I. (Claude Isaac), 1880 192417
- Oregon Agricultural Experiment Station16
- Institute For Natural Resources13
- Pacific Northwest Insect Management Conference13
- United States. Agricultural Research Service13