Columbia subject headings:
Afghanistan--History--Chronology.
Iran--History--Chronology.
Middle East--History--Chronology.
Turkey--History--Chronology.
Harvard subject headings:
Afghanistan--History--Chronology.
Iran--History--Chronology.
Middle East--History--Chronology.
Turkey--History--Chronology.
Princeton subject headings:
Afghanistan--History--Chronology.
Iran--History--Chronology.
Middle East--History--Chronology.
Turkey--History--Chronology.