Columbia subject headings:
Turkey--Antiquities.
Turkey--History--To 1453.
Harvard subject headings:
Identity (Psychology)--Turkey--Congresses.
Space (Architecture)--Social aspects--Turkey--Congresses.
Spatial systems--Congresses.
Turkey--Antiquities--Congresses.
Turkey--History--To 1453.
Princeton subject headings:
Turkey--Antiquities.
Turkey--History--To 1453.