Columbia subject headings:
City planning--Mexico--Mexico City--History--20th century.
Low-income housing--Mexico--Mexico City--History--20th century.
Mexico--Social conditions--1970-
Social structure--Mexico--Mexico City--History--20th century.
Harvard subject headings:
City planning--Mexico--Mexico City
City planning--Mexico--Mexico City--History--20th century.
Low-income housing--Mexico--Mexico City--History--20th century.
Mexico City (Mexico)--Population--20th century.
Mexico City (Mexico)--Social conditions--20th century.
Mexico--Social conditions--1970-
Social structure--Mexico--Mexico City--History--20th century.
Princeton subject headings:
City planning--Mexico--Mexico City--History--20th century.
Low-income housing--Mexico--Mexico City--History--20th century.
Mexico--Social conditions--1970-
Social structure--Mexico--Mexico CIty--History--20th century.