Columbia subject headings:
Communism--Costa Rica--History--20th century.
Costa Rica--Politics and government--1821-1948.
Social problems--Costa Rica--History--20th century.
Harvard subject headings:
Communism--Costa Rica--History--20th century.
Costa Rica--Politics and government--1821-1948.
Social problems--Costa Rica--History--20th century.
Princeton subject headings:
Communism--Costa Rica--History--20th century.
Costa Rica--Politics and government--1821-1948.
Social problems--Costa Rica--History--20th century.