Columbia subject headings:
Harvard subject headings:
Boards of trade--Germany--Neubrandenburg--History.
Boards of trade--Germany--Rostock--History.
Boards of trade--Germany--Schwerin--History.
Neubrandenburg (Germany)--History.
Rostock (Germany)--History.
Schwerin (Germany)--History.
Princeton subject headings:
Boards of trade--Germany--History.