Subject
- Fisheries -- Oregon20
- Forests and forestry -- Northwest, Pacific16
- Herbicides16
- Lane County (Or.) -- History15
- Chemical reactions14
- Game and game-birds -- Oregon13
- Oceanography -- Research12
- Douglas fir11
- Fish culture -- Oregon11
- Game protection -- Oregon11
- Fishery management -- Oregon -- Statistics9
- Fishes -- Oregon9
- Boron8
- Columbia River8
- Fish-culture -- Oregon -- Statistics8
- Fishing -- Oregon -- Statistics8
- Forests and forestry -- Research -- Northwest, Pacific8
- Heat -- Transmission8
- Pacific Northwest Forest and Range Experiment Station (Portland, Or.)8
- Douglas fir beetle7