Columbia subject headings:
Colorado River (Colo.-Mexico)--Environmental conditions--Management.
Mexico--Environmental conditions--Management.
Mexico--Foreign relations--United States.
Rio Grande (Colo.-Mexico and Tex.)--Environmental conditions--Management.
Rivers--Mexico--Environmental conditions--Management.
Rivers--Southwestern States--Environmental conditions--Management.
Southwestern States--Environmental conditions--Management.
United States--Foreign relations--Mexico.
Harvard subject headings:
Mexico--Foreign relations--United States.
United States--Foreign relations--Mexico.
Water-supply--Colorado River Valley (Colo.-Mexico)--International cooperation.
Water-supply--Mexican-American Border Region--International cooperation.
Water-supply--Rio Grande Valley (Colo.-Mexico and Tex.)--International cooperation.
Princeton subject headings: