Columbia subject headings:
Harvard subject headings:
Labor unions--Spain--Barcelona Region--History--20th century.
Spain--Politics and government--1939-1975.
Spain--Politics and government--1975-1982.
Working class--Spain--Barcelona Region--History--20th century.
Princeton subject headings:
Labor unions--Spain--Barcelona Region--History--20th century.
Spain--Politics and government--1939-1975.
Spain--Politics and government--1975-.
Working class--Spain--Barcelona Region--History--20th century.