Columbia subject headings:
Seljuks--Iran--History.
Seljuks--Iraq--History.
Harvard subject headings:
Iran--History--640-1256.
Iraq--History--634-1534.
Islamic Empire--History--750-1258.
Khurāsān (Iran)--History.
Seljuks--History.
Princeton subject headings:
Seljuks--Iran--History.
Seljuks--Iraq--History.