Columbia subject headings:
Civilization, Medieval.
History, Modern.
Mediterranean Region--History.
Middle Ages.
Harvard subject headings:
Civilization, Medieval
History, Modern
Mediterranean Region--History.
Middle Ages
Pistarino, Geo.
Princeton subject headings:
Byzantine Empire--Civilization.
Byzantine Empire--Commerce--History.
Byzantine Empire--Relations--Italy.
Italy--Civilization--1268-1559.
Italy--Commerce--History.
Italy--Relations--Byzantine Empire.