Columbia subject headings:
Mexico--Intellectual life--20th century.
Mexico--Politics and government--1970-1988.
Harvard subject headings:
Democracy--Mexico
Ideology--Mexico--History--20th century.
Mexico--Politics and government--1946-1970
Mexico--Politics and government--1970-1988.
Mexico--Politics and government--1988-
Socialism--Mexico
Princeton subject headings:
Democracy--Mexico.
Ideology--Mexico--History--20th century.
Mexico--Politics and government--1946-1970.
Mexico--Politics and government--1970-1988.
Mexico--Politics and government--1988-2000.
Socialism--Mexico.