Columbia subject headings:
Harvard subject headings:
City planning--Mexico--Mexico City--History--20th century.
Contreras, Carlos, 1892-1970.
Mexico City (Mexico)--History--20th century.
Urbanization--Mexico--Mexico City--History--20th century.
Princeton subject headings:
City planning--Mexico--Mexico City--History--20th century.
Contreras, Carlos, 1892-1970.
Mexico City (Mexico)--History--20th century.
Urbanization--Mexico--Mexico City--History--20th century.