Columbia subject headings:
Aragon (Spain)--Commerce--History--To 1500.
Mediterranean Region--Commerce--History.
Valencia (Spain : Region)--Commerce--History--To 1500.
Harvard subject headings:
Aragon (Spain)--Commerce--History--To 1500.
Mediterranean Region--Commerce--History.
Valencia (Spain : Region)--Commerce--History--To 1500.
Princeton subject headings:
Aragon (Spain)--Commerce--History--To 1500.
Mediterranean Region--Commerce--History.
Valencia (Spain : Region)--Commerce--History--To 1500.