Columbia subject headings:
Hydraulic engineering--Mexico--History--Sources.
Hydraulic engineering--Mexico--History.
Indians of Mexico--Antiquities.
Mexico--Antiquities.
Water--Symbolic aspects--Mexico--History.
Waterworks--Mexico--History.
Harvard subject headings:
Hydraulic engineering--Mexico--History--To 1500.
Indians of Mexico--Agriculture--History.
Indians of Mexico--Antiquities
Mexico--Antiquities.
Water--Symbolic aspects--Mexico.
Princeton subject headings:
Hydraulic engineering--Mexico--History--To 1500.
Indians of Mexico--Agriculture--History.
Indians of Mexico--Antiquities.
Mexico--Antiquities.
Water--Symbolic aspects--Mexico.