Columbia subject headings:
Costa Rica--Economic conditions--1948---Periodicals.
Costa Rica--Politics and government--1986---Periodicals.
Harvard subject headings:
Costa Rica--Economic conditions--1948---Periodicals.
Costa Rica--Politics and government--1986---Periodicals.
Princeton subject headings:
Costa Rica--Economic conditions--1948---Periodicals.
Costa Rica--Politics and government--1986---Periodicals.