Columbia subject headings:
Harvard subject headings:
Byzantine Empire--Commerce--History--Sources.
Byzantine Empire--History--1081-1453--Sources.
Byzantine Empire--Relations--Italy--Venice--Sources.
Byzantine Empire--Social conditions--Sources.
Slaves--Byzantine Empire--History--Sources.
Torre, Giacomo dalla (Venetian notary)
Venice (Italy)--Relations--Byzantine Empire--Sources.
Princeton subject headings:
Byzantine Empire--Commerce--History--Sources.
Byzantine Empire--History--1081-1453--Sources.
Byzantine Empire--Relations--Venice--Sources.
Byzantine Empire--Social conditions--Sources.
Slaves--Byzantine Empire--History--Sources.
Torre, Giacomo dalla (Venetian notary)
Venice (Italy)--Relations--Byzantine Empire--Sources.