Columbia subject headings:
Labor movement--Greece--History--20th century.
Labor unions--Greece--History--20th century.
Syndicalism--Greece--History--20th century.
Harvard subject headings:
Labor movement--Greece--History--20th century.
Labor unions--Greece--History--20th century.
Syndicalism--Greece--History--20th century.
Princeton subject headings:
Labor movement--Greece--History--20th century.
Labor unions--Greece--History--20th century.
Syndicalism--Greece--History--20th century.