Creator
- Oregon State University. Extension Service94
- Oregon State University. Agricultural Experiment Station89
- Cross, Timothy L.47
- Oregon State College. Agricultural Experiment Station34
- Oregon State University34
- Oregon State College. Extension Service29
- Oregon. Employment Division26
- Oregon Agricultural College. Experiment Station25
- Cowles, Timothy J.20
- Oregon State University. College Of Forestry20
- Oregon State Agricultural College. Agricultural Experiment Station17
- Seavert, Clark F.16
- Oregon State College. Federal Cooperative Extension Service15
- Oregon. State Game Commission. Fishery Division15
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)15
- Pacific Northwest Insect Management Conference15
- Thorpe, Jim15
- Boyd, Timothy John, 1958 201314
- Klamath County (Or.)14
- Oregon Agricultural College. Extension Service14