Columbia subject headings:
Boards of trade--Germany--Lippe.
Boards of trade--Germany--Westphalia.
Commercial associations--Germany--History--20th century.
Germany--Economic conditions--1918-1945.
Lippe (Germany)--Economic conditions--20th century.
National socialism--Germany--Lippe.
National socialism--Germany--Westphalia.
Westphalia (Germany)--Economic conditions--20th century.
Harvard subject headings:
Boards of trade--Germany--Lippe.
Boards of trade--Germany--Westphalia.
Commercial associations--Germany--History--20th century.
Germany--Commerce--History--20th century.
Germany--Economic conditions--1918-1945.
Lippe (Germany)--Economic conditions--20th century.
National socialism--Germany--Lippe.
National socialism--Germany--Westphalia.
Westphalia (Germany)--Economic conditions--20th century.
Princeton subject headings:
Boards of trade--Germany--Lippe.
Boards of trade--Germany--Westphalia.
Germany--Economic conditions--1918-1945.
National socialism--Germany--Lippe.
National socialism--Germany--Westphalia.