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- Salmon 77
- Dams 44
- Rivers--Oregon 32
- Lectures and lecturing 15
- Rivers--Washington (State) 13
- Fishes--Conservation 12
- Water--Pollution 9
- Fishing 8
- Fish traps 7
- Seining 5
- Bears 4
- Fishways 4
- Wildlife refuges 4
- Birds--Conservation 3
- Hunting 3
- Trout 3
- Beavers 2
- Diseases 2
- Finley, William L. (William Lovell), 1876-1953 2
- Fish hatcheries 2