Columbia subject headings:
Palaces--Conservation and restoration--Turkey--Congresses.
Palaces--Remodeling for other use--Turkey--Congresses.
Palaces--Turkey--History--Congresses.
Harvard subject headings:
Palaces--Remodeling for other use--Turkey--Congresses.
Palaces--Turkey--Conservation and restoration--Congresses.
Palaces--Turkey--History--Congresses.
Princeton subject headings:
Palaces--Turkey--Conservation and restoration--Congresses.
Palaces--Turkey--History--Congresses.
Palaces--Turkey--Remodeling for other use--Congresses.