Columbia subject headings:
Rivers--United States.
Water rights--United States.
Water--Law and legislation--United States.
Harvard subject headings:
Canada--Foreign relations--Treaties.
Interstate agreements--United States.
Mexico--Foreign relations--Treaties.
Rivers--Law and legislation--United States.
United States--Foreign relations--Treaties.
Water rights--Canada.
Water rights--Mexico
Water rights--United States
Water--Law and legislation--United States
Princeton subject headings:
Canada--Foreign relations--Treaties.
Interstate agreements--United States.
Mexico--Foreign relations--Treaties.
Treaties.
United States--Foreign relations--Treaties.
Water rights--Canada.
Water rights--Mexico.
Water rights--United States.