Columbia subject headings:
Mexico--Economic conditions--1970-1982.
Mexico--Politics and government--1946-1970.
Mexico--Social conditions.
Harvard subject headings:
Mexico--Economic conditions--1970-1982.
Mexico--Economic conditions--1982-1994.
Mexico--Politics and government--1946-1970
Mexico--Social conditions.
Princeton subject headings:
Mexico--Economic conditions--1970-1982.
Mexico--Economic conditions--1982-1994.
Mexico--Politics and government--1946-1970.
Mexico--Social conditions.