Columbia subject headings:
Elite (Social sciences)--Mexico--History.
Mexico--Politics and government--20th century.
Mexico--Politics and government--21st century.
Social structure--Mexico--History.
Harvard subject headings:
Princeton subject headings:
Elite (Social sciences)--Mexico--History--20th century--21st century.
Mexico--Politics and government--20th century--21st century.
Social structure--Mexico--History--20th century--21st century.