Columbia subject headings:
Harvard subject headings:
Columbia River Treaty
Columbia River Watershed--Social conditions.
Water resources development--Environmental aspects--Columbia River Watershed.
Water resources development--Law and legislation--Columbia River Watershed.
Water resources development--Social aspects--Columbia River Watershed.
Princeton subject headings:
Columbia River Treaty
Columbia River Watershed--Social conditions.
Water resources development--Environmental aspects--Columbia River Watershed.
Water resources development--Law and legislation--Columbia River Watershed.
Water resources development--Social aspects--Columbia River Watershed.