- Pacific Northwest Vegetable Insect Conference28
- Pacific Northwest Insect Management Conference25
- Oregon State University. Extension Service22
- Oregon State University. Agricultural Experiment Station14
- United States. Agricultural Research Service10
- Oregon State University. Department Of Crop Science9
- Oregon State University. Forest Research Laboratory9
- Fisher, Glenn C.8
- Oregon State University. Department Of Horticulture7
- U.S. International Biological Program. Coniferous Forest Biome7
- Rondon, Silvia I.6
- Young, William C.6
- Hopkins, A. D. (Andrew Delmar), 1857 19485
- Pacific Northwest Cooperative Extension5
- University Of Washington5
- Weinzierl, Rick5
- Crowell, H. H. (Hamblin Howes), 1913 4
- Dreves, Amy J.4
- Oregon State University. Federal Cooperative Extension Service4
- Ritcher, Paul O.4