Columbia subject headings:
Harvard subject headings:
Industries--Germany--History--20th century--Congresses.
Labor policy--Germany--History--20th century--Congresses.
Labor union democracy--Germany--History--20th century--Congresses.
Labor unions--Germany--History--20th century--Congresses.
Labor unions--Law and legislation--Germany--History--20th century--Congresses.
National socialism--Congresses.
Reconstruction (1939-1951)--Germany--Congresses.
Works councils--Germany--History--20th century--Congresses.
Works councils--Law and legislation--Germany--History--20th century--Congresses.
Princeton subject headings:
Industries--Germany--History--20th century--Congresses.
Labor policy--Germany--History--20th century--Congresses.
Labor union democracy--Germany--History--20th century--Congresses.
Labor unions--Germany--History--20th century--Congresses.
Labor unions--Law and legislation--Germany--History--20th century--Congresses.
National socialism--Congresses.
Reconstruction (1939-1951)--Germany--Congresses.
Works councils--Germany--History--20th century--Congresses.
Works councils--Law and legislation--Germany--History--20th century--Congresses.