Columbia subject headings:
Central America--Foreign economic relations--Costa Rica--Congresses.
Costa Rica--Economic conditions--1948---Congresses.
Costa Rica--Foreign economic relations--Central America--Congresses.
Costa Rica--Politics and government--1948-1986--Congresses.
Elections--Costa Rica--Congresses.
Working class--Costa Rica--Congresses.
Harvard subject headings:
Central America--Foreign economic relations--Costa Rica--Congresses.
Costa Rica--Economic conditions--1948---Congresses.
Costa Rica--Foreign economic relations--Central America--Congresses.
Costa Rica--Politics and government--1948---Congresses.
Elections--Costa Rica--Congresses.
Labor movement--Costa Rica--Congresses.
Working class--Costa Rica--Congresses.
Princeton subject headings:
Costa Rica--Economic conditions--1948---Congresses.
Costa Rica--Politics and government--1948-1986--Congresses.
Costa Rica--Social conditions--Congresses.