Subject
- Wildlife management -- Oregon96
- Fishing -- Oregon85
- Hunting -- Oregon85
- Forests and forestry -- Oregon59
- Oregon State University. College of Forestry54
- Forests and forestry -- Northwest, Pacific45
- Fisheries -- Oregon36
- Forests and forestry -- Research -- Oregon36
- Game and game-birds -- Oregon32
- Agricultural pests -- Control -- Congresses31
- Fisheries -- Economic aspects -- Congresses31
- Game protection -- Oregon31
- Oregon State University -- Curricula29
- Environmental policy -- Oregon26
- Water -- Pollution -- Oregon26
- Air -- Pollution -- Oregon25
- Hatfield Marine Science Center25
- Fisheries -- Columbia River -- Periodicals24
- Gillnetting -- Columbia River -- Periodicals24
- Sustainable fisheries -- Congresses23