Columbia subject headings:
Labor unions--Government policy--Mexico.
Labor unions--Political activity--Mexico.
Mexico--Economic conditions--1970-1982.
Mexico--Economic policy--1970-1994.
Mexico--Politics and government--1970-1988.
Harvard subject headings:
Labor unions--Government policy--Mexico.
Labor unions--Mexico--Political activity.
Mexico--Economic conditions--1970-1982.
Mexico--Economic policy--1970-1994.
Mexico--Politics and government--1970-1988.
Princeton subject headings:
Labor unions--Government policy--Mexico.
Labor unions--Mexico--Political activity.
Mexico--Economic conditions--1970-1982.
Mexico--Economic conditions--1982-1994.
Mexico--Economic policy--1970-1994.
Mexico--Politics and government--1970-