Subject
- Agriculture -- Oregon -- Statistics165
- Farm produce -- Oregon -- Statistics164
- Western Dry Kiln Association. Meeting137
- 4-H clubs125
- Forests and Forestry -- Oregon36
- Oregon State University. College of Forestry36
- Fishing -- Oregon34
- Hunting -- Oregon34
- Wildlife management -- Oregon34
- Parallel processing (Electronic computers)24
- Fisheries -- Columbia River -- Periodicals21
- Gillnetting -- Columbia River -- Periodicals21
- Reforestation -- Oregon21
- Lumber -- Drying20
- Cover crops -- Oregon19
- Hydrology -- Research -- Oregon17
- Forest management -- Oregon16
- Lane County (Or.) -- History16
- Metal oxide semiconductors, Complementary16
- Tualatin River Watershed (Or.)16