Columbia subject headings:
Bosporus (Turkey)--History.
Istanbul (Turkey)--Description and travel.
Istanbul (Turkey)--History.
Harvard subject headings:
Bosporus (Turkey)--History.
Istanbul (Turkey)--Description and travel.
Istanbul (Turkey)--History.
Princeton subject headings:
Bosporus (Turkey)--History.
Istanbul (Turkey)--Description and travel.
Istanbul (Turkey)--History.