Columbia subject headings:
Harvard subject headings:
Germany--Economic conditions--1918-1945.
Germany--History--1918-1933.
Labor policy--Germany--History--20th century.
Labor unions--Germany--History--20th century
Princeton subject headings:
Germany--Economic conditions--1918-1945.
Germany--History--1918-1933.
Labor policy--Germany--History--20th century.
Labor unions--Germany--History--20th century.