Columbia subject headings:
Education--Mexico.
Mexico--Economic conditions--1970-1982.
Mexico--Politics and government--1970-1988.
Harvard subject headings:
Education--Mexico
Mexico--Economic conditions--1982-1994.
Mexico--Politics and government--1970-1988.
Princeton subject headings:
Education--Mexico.
Mexico--Economic conditions--1970-1982.
Mexico--Economic conditions--1982-1994.
Mexico--Politics and government--1970-.