Creator
- Oregon State University. Extension Service141
- Oregon State University. Agricultural Experiment Station132
- Oregon. Dept. Of Geology And Mineral Industries118
- Oregon. State Game Commission98
- Oregon State University. College Of Forestry47
- Oregon State University. Water Resources Research Institute33
- Oregon. Department Of Fish And Wildlife33
- United States. Agricultural Research Service33
- Oregon State College. Extension Service32
- Oregon State College. Agricultural Experiment Station29
- United States. Forest Service29
- Oregon State University. Forest Research Laboratory28
- Institute For Natural Resources26
- Pacific Northwest Insect Management Conference22
- United States. Soil Conservation Service22
- Mason, Ralph S.21
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)19
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club19
- Columbia Basin Agricultural Research Center18
- Upper Willamette Resource Conservation And Development Project18