Columbia subject headings:
Germany--Economic policy--History--19th century.
Germany--Economic policy--History--20th century.
Germany--History--Autonomy and independence movements.
Trade regulation--Germany--History--19th century.
Trade regulation--Germany--History--20th century.
Harvard subject headings:
Germany--Economic policy--19th century.
Germany--Economic policy--20th century
Trade regulation--Germany--History--19th century.
Trade regulation--Germany--History--20th century.
Princeton subject headings:
Germany--Economic policy--History--19th century--Congresses.
Germany--Economic policy--History--20th century--Congresses.
Germany--History--1789-1900--Congresses.
Germany--History--20th century--Congresses.
Trade regulation--Germany--History--19th century--Congresses.
Trade regulation--Germany--History--20th century--Congresses.