Columbia subject headings:
England--Commerce--History.
Europe--Commerce--History.
Finance--England--History.
Finance--Europe--History.
Harvard subject headings:
Europe--Commerce--History.
Europe--Economic conditions--To 1492.
Merchants--Europe--History
Middle Ages.
Princeton subject headings:
Europe--Commerce--History.
Europe--Economic conditions--To 1492.
Merchants--Europe--History.
Middle Ages.