Columbia subject headings:
Iraq--History--634-1534--Early works to 1800.
Seljuks--Early works to 1800.
Harvard subject headings:
Iraq--History--634-1534--Early works to 1800.
Islamic Empire--History--750-1258--Early works to 1800.
Seljuks--Early works to 1800.
Princeton subject headings:
Iraq--History--634-1534--Early works to 1800.
Islamic Empire--History--750-1258--Early works to 1800.
Seljuks--Early works to 1800.