Columbia subject headings:
Central America--Commerce--Mexico.
Central America--Economic conditions--1979-
Mexico--Commerce--Central America.
Mexico--Economic conditions--1994-
Mexico--Economic policy--1994-
Plan Puebla Panamá.
Harvard subject headings:
Central America--Commerce--Mexico.
Central America--Economic conditions--1979-
Mexico--Commerce--Central America.
Mexico--Economic conditions--1994-
Mexico--Economic policy--1994-
Plan Puebla Panamá.
Princeton subject headings:
Central America--Commerce--Mexico.
Central America--Economic conditions--1979-
Mexico--Commerce--Central America.
Mexico--Economic conditions--1994-
Mexico--Economic policy--1994-
Plan Puebla Panamá.