Columbia subject headings:
Harvard subject headings:
Italy--Relations--Middle East--Congresses.
Merchant marine--Italy--History--Congresses.
Merchant marine--Mediterranean Region--History--Congresses.
Middle East--Relations--Italy--Congresses.
Princeton subject headings:
Byzantine Empire--Relations--Italy.
Facsimiles.
Italy--History, Naval.
Italy--Relations--Byzantine Empire.
Mediterranean region--Economic conditions--History