Subject
- Wildlife management -- Oregon35
- Fishing -- Oregon31
- Hunting -- Oregon31
- Fisheries -- Oregon28
- Agricultural pests -- Control -- Congresses26
- Oregon State University -- Curricula25
- Fisheries -- Columbia River -- Periodicals20
- Gillnetting -- Columbia River -- Periodicals20
- Hatfield Marine Science Center18
- Animal population density17
- Carcinus maenas -- Oregon17
- Introduced aquatic organisms -- Oregon17
- Marine sciences16
- Fisheries -- Economic aspects -- Congresses15
- Game and game-birds -- Oregon15
- Game protection -- Oregon15
- Carcinus maenas -- Washington14
- Introduced aquatic organisms -- Washington14
- Fisheries -- British Columbia -- Periodicals13
- Pacific Marine Fisheries Commission -- Periodicals13