Columbia subject headings:
Labor movement--Switzerland--History--19th century.
Labor movement--Switzerland--History--20th century.
Labor unions--Switzerland--History--19th century.
Labor unions--Switzerland--History--20th century.
Socialism--Switzerland--History--19th century.
Socialism--Switzerland--History--20th century.
Harvard subject headings:
Labor movement--Switzerland--History--19th century.
Labor movement--Switzerland--History--20th century.
Labor unions--Switzerland--History--19th century.
Labor unions--Switzerland--History--20th century.
Socialism--Switzerland--19th century.
Socialism--Switzerland--20th century.
Socialism--Switzerland--History--19th century.
Socialism--Switzerland--History--20th century.
Princeton subject headings: