- Oregon State University. Extension Service30
- Forest Products Laboratory (U.S.)26
- Oregon State College. Federal Cooperative Extension Service16
- Stebbins, Robert L.16
- Bellantoni, L.15
- Et Al.15
- Mcgivern, C. L.15
- Schellman, H.15
- Breithaupt, L. R. (Le Roy), 1886 14
- Selbo, M. L. (Magnus Leonard), 1901 14
- Tanguay, Robert L.14
- Thomas, M. D.14
- Oregon State University. Agricultural Experiment Station13
- Simonich, Staci L. Massey13
- Brodeur, Richard D.11
- Dugger, Katie M.11
- Hart, John M. (John Mervyn), 1947 11
- Osta, J.11
- Waters, Katrina M.11
- Gent, D. H.10