Columbia subject headings:
Columbia River Basin Fish and Wildlife Program (U.S.)
Fishes--Conservation--Northwest, Pacific.
Salmon fisheries--Columbia River.
Salmon--Law and legislation--Northwest, Pacific.
Harvard subject headings:
Columbia River Watershed--Environmental conditions.
Fishery law and legislation--United States--History.
Indians of North America--Fishing--Law and legislation--Northwest, Pacific--History.
Pacific salmon fisheries--Columbia River--History.
Princeton subject headings: