Subject
- Fisheries -- Oregon26
- Fishery management -- Oregon -- Statistics25
- Fish-culture -- Oregon -- Statistics24
- Fishing -- Oregon -- Statistics24
- Fish culture -- Oregon22
- Report (United States. Forest Service. Northern Region. Insect and Disease Management)21
- Animal population density20
- Carcinus maenas -- Oregon20
- Introduced aquatic organisms -- Oregon20
- Carcinus maenas -- Washington16
- Introduced aquatic organisms -- Washington16
- Columbia Basin Agricultural Research Center -- Periodicals15
- Forests and forestry -- Northwest, Pacific15
- Potatoes -- Varieties -- Oregon -- Klamath County15
- Agriculture -- Research -- Columbia River Watershed14
- Central Oregon Agricultural Research Center -- Periodicals14
- Fishes -- Oregon14
- Wood poles -- Maintenance and repair14
- Continental shelf -- California -- Pacific Coast13
- Fisheries -- British Columbia -- Periodicals13