Columbia subject headings:
Harvard subject headings:
Denmark--Commerce--History--To 1500.
Denmark--Foreign relations--Germany, Northern.
Germany, Northern--Commerce--History--To 1500.
Germany, Northern--Foreign relations--Denmark.
Hanseatic League--History--To 1500.
Princeton subject headings:
Denmark--Commerce--History--To 1500.
Denmark--Foreign relations--Germany, Northern.
Germany, Northern--Commerce--History--To 1500.
Germany, Northern--Foreign relations--Denmark.
Hanseatic League--History--To 1500.