Columbia subject headings:
Mexico City (Mexico)--Description and travel.
Mexico City (Mexico)--Economic conditions.
Mexico City (Mexico)--History.
Mexico City (Mexico)--Social conditions.
Urbanization--Mexico--Mexico City.
Harvard subject headings:
Mexico City (Mexico)--Description and travel
Mexico City (Mexico)--Economic conditions.
Mexico City (Mexico)--History
Mexico City (Mexico)--Social conditions
Urbanization--Mexico--Mexico City.
Princeton subject headings:
Mexico City (Mexico)--Description and travel.
Mexico City (Mexico)--Economic conditions.
Mexico City (Mexico)--History.
Mexico City (Mexico)--Social conditions.
Urbanization--Mexico--Mexico City.