Columbia subject headings:
Deutscher Metallarbeiter-Verband--History--20th century.
Labor unions and fascism--Germany.
Metal-workers--Labor unions--Germany.
National socialism.
Harvard subject headings:
Deutscher Metallarbeiter-Verband--History--20th century.
Labor unions and fascism--Germany.
Metal-workers--Labor unions--Germany--Biography.
National socialism.
Princeton subject headings:
Deutscher Metallarbeiter-Verband--History--20th century.
Labor unions and fascism--Germany.
Metal-workers--Labor unions--Germany--Biography.
National socialism.