Subject
- Animal population density15
- Carcinus maenas -- Oregon15
- Introduced aquatic organisms -- Oregon15
- Carcinus maenas -- Washington12
- Introduced aquatic organisms -- Washington12
- Hatfield Marine Science Center11
- Fisheries -- Columbia River -- Periodicals9
- Gillnetting -- Columbia River -- Periodicals9
- Marine sciences9
- Clam fisheries -- Oregon8
- Clam fisheries -- Oregon -- Statistics7
- Estuaries -- Oregon6
- Fisheries -- Economic aspects -- Congresses6
- Boats and boating -- Oregon -- Safety measures5
- Marine ecology5
- Marine sediments5
- Netarts Bay (Or.)5
- Pilot guides -- Oregon5
- Estuarine area conservation -- Oregon4
- Estuarine ecology -- Oregon -- Yaquina Bay4