Columbia subject headings:
Climatic changes--Mexico--Mexico City Metropolitan Area.
Climatic changes--Mexico--Mexico City.
Water-supply--Government policy--Mexico--Mexico City Metropolitan Area.
Water-supply--Government policy--Mexico--Mexico City.
Harvard subject headings:
Climatic changes--Mexico--Mexico City Metropolitan Area.
Climatic changes--Mexico--Mexico City.
Water-supply--Government policy--Mexico--Mexico City Metropolitan Area.
Water-supply--Government policy--Mexico--Mexico City.
Princeton subject headings:
Climatic changes--Mexico--Mexico City Metropolitan Area.
Climatic changes--Mexico--Mexico City.
Water-supply--Government policy--Mexico--Mexico City.
Water-supply--Mexico.