Columbia subject headings:
Costa Rica--Politics and government--1821-1948.
Costa Rica--Politics and government--1948-1986.
Partido Comunista de Costa Rica--History.
Partido Vanguardia Popular (Costa Rica)--History.
Harvard subject headings:
Costa Rica--Politics and government--1821-1948.
Costa Rica--Politics and government--1948-1986.
Partido Comunista de Costa Rica--History.
Partido Vanguardia Popular (Costa Rica)--History.
Princeton subject headings:
Communism--Costa Rica--History--20th century.
Communist parties--Costa Rica--History--20th century.
Costa Rica--Politics and government--1821-1948.
Political parties--Costa Rica--History--20th century.