Columbia subject headings:
Communism--Spain.
Spain--History--Civil War, 1936-1939.
Spain--Politics and government--1939-1975.
Harvard subject headings:
Communism--Spain
Spain--History--Civil War, 1936-1939.
Spain--Politics and government--1939-1975.
Princeton subject headings:
Communism--Spain.
Spain--History--Civil War, 1936-1939.
Spain--Politics and government--1939-1975.