Columbia subject headings:
Harvard subject headings:
Antiquities, Prehistoric--Black Sea Region--Congresses.
Black Sea Region--Antiquities--Congresses.
Black Sea Region--Civilization--Congresses.
Black Sea Region--History--Congresses.
Excavations (Archaeology)--Black Sea Region--Congresses.
Material culture--Black Sea Region--Congresses.
Princeton subject headings:
Antiquities, Prehistoric--Black Sea Region--Congresses.
Black Sea Region--Antiquities--Congresses.
Black Sea Region--Civilization--Congresses.
Black Sea Region--History--Congresses.
Material culture--Black Sea Region--Congresses.