Columbia subject headings:
Istanbul (Turkey)--Antiquities, Byzantine.
Istanbul (Turkey)--Guidebooks.
Istanbul (Turkey)--History--To 1453--Guidebooks.
Harvard subject headings:
Architecture, Byzantine
Istanbul (Turkey)--Antiquities, Byzantine.
Istanbul (Turkey)--Guidebooks.
Istanbul (Turkey)--History--To 1453--Guidebooks.
Princeton subject headings:
Architecture, Byzantine.
Guidebooks.
Istanbul (Turkey)--Antiquities, Byzantine.
Istanbul (Turkey)--Guidebooks.
Istanbul (Turkey)--History--To 1453--Guidebooks.