Columbia subject headings:
Civilization, Mycenaean--Congresses.
Thracians--Congresses.
Harvard subject headings:
Civilization, Mycenaean--Congresses.
Mycenae (Extinct city)--Congresses.
Thracians--Congresses.
Princeton subject headings:
Civilization, Mycenaean--Congresses.
Thracians--Congresses.