Subject
- Fishes -- Habitat -- Conservation -- Oregon7
- Fishes -- Habitat -- Oregon4
- Anadromous fishes -- Oregon -- John Day River3
- Mysidae -- Oregon3
- Shrimps -- Oregon3
- Fishes -- Habitat -- Conservation -- Oregon -- John Day River2
- Fishes -- Habitat -- Oregon -- Umpqua River2
- Rainbow trout -- Oregon2
- Wildlife habitat improvement -- Oregon -- John Day River2
- Anadromous fishes -- Oregon1
- Chinook salmon1
- Fish stocking -- Oregon -- Powder River1
- Fisheries -- Oregon1
- Fishery management -- Oregon -- Powder River1
- Fishes -- Control -- Oregon -- Bully Creek (Malheur County)1
- Fishes -- Control -- Oregon -- Malheur River1
- Fishes -- Control -- Oregon -- Powder River1
- Fishes -- Effect of chemicals on -- Oregon -- John Day River1
- Fishes -- Effect of predation on -- Oregon -- John Day River1
- Fishes -- Habitat -- Oregon -- Crooked River1