- Oregon State University. Agricultural Experiment Station27
- Oregon State University. Extension Service23
- Wyatt, Bruce15
- Oregon State University14
- Fleischbein, Jane8
- Gilbert, William E.8
- Forest Products Laboratory (U.S.)7
- Bayer, Range D., 1947 6
- Et Al.6
- Huyer, Adriana, 1945 6
- Smith, Robert L. (Robert Lloyd), 1935 6
- U.S. International Biological Program. Coniferous Forest Biome6
- Kosro, P. Michael, 1951 5
- Oregon State University. Forest Research Laboratory5
- Peterson, W. T.5
- Wheeler, Patricia A.5
- Barth, Jack A.4
- Burt, Wayne V.4
- International Maize And Wheat Improvement Center4
- Oscar, Breland G.4