Columbia subject headings:
Catalonia (Spain)--Politics and government.
Partido Comunista de España--History--20th century.
Partit Socialista Unificat de Catalunya--History--20th century.
Socialism--Spain--Catalonia--History--20th century.
Socialism--Spain--History--20th century.
Spain--Politics and government--20th century.
Harvard subject headings:
Catalonia (Spain)--Politics and government.
Communism--Spain
Partido Comunista de España
Partido Comunista de España--History--20th century.
Partit Socialista Unificat de Catalunya--History--20th century.
Socialism--Spain--20th century.
Socialism--Spain--Catalonia--20th century.
Spain--Politics and government--20th century.
Princeton subject headings:
Catalonia (Spain)--Politics and government.
Partido Comunista de España--History--20th century.
Partit Socialista Unificat de Catalunya--History--20th century.
Socialism--Spain--Catalonia--History--20th century.
Socialism--Spain--History--20th century.
Spain--Politics and government--20th century.