Columbia subject headings:
Mediterranean Region--Antiquities--Congresses.
Mediterranean Region--Commerce--History--Congresses.
Underwater archaeology--Mediterranean Region--Congresses.
Harvard subject headings:
Coastal archaeology--Mediterranean Region--Congresses.
Coasts--Mediterranean Region--History--Congresses.
Harbors--Mediterranean Region--History--Congresses.
Mediterranean Region--Antiquities--Congresses.
Mediterranean Region--Commerce--History--Congresses.
Navigation--Mediterranean Region--History--Congresses.
Trade routes--Mediterranean Region--Congresses.
Underwater archaeology--Mediterranean Region--Congresses.
Princeton subject headings:
Harbors--Mediterranean Region--History--Congresses.
Navigation--Mediterranean Region--History--Congresses.
Trade routes--Mediterranean Region--Congresses.