Columbia subject headings:
Fishery resources--Hatchery vs. wild stocks--Northwest, Pacific.
Fishes--Conservation--Northwest, Pacific.
Salmon--Effect of habitat modification on--Northwest, Pacific.
Valley ecology--Northwest, Pacific.
Watershed management--Northwest, Pacific.
Harvard subject headings:
Fishery resources--Hatchery vs. wild stocks--Northwest, Pacific.
Fishes--Conservation--Northwest, Pacific.
Salmon--Effect of habitat modification on--Northwest, Pacific.
Valley ecology--Northwest, Pacific.
Watershed management--Northwest, Pacific.
Princeton subject headings:
Fishery resources--Northwest, Pacific--Hatchery vs. wild stocks.
Fishes--Conservation--Northwest, Pacific.
Salmon--Northwest, Pacific--Effect of habitat modification on.
Valley ecology--Northwest, Pacific.
Watershed management--Northwest, Pacific.