Columbia subject headings:
Erbil (Iraq)--History.
Ibn al-Mustawfī, Sharaf al-Dīn Abū al-Barakāt, 1170-1239.
Iraq--History--634-1534.
Harvard subject headings:
Erbil (Iraq)--History.
Ibn al-Mustawfī, Sharaf al-Dīn Abū al-Barakāt, 1170-1239.
Iraq--History--634-1534.
Princeton subject headings:
Abbasids--History--634-1534.
Erbil (Iraq)--History--634-1534.
Ibn al-Mustawfī, Sharaf al-Dīn Abū al-Barakāt, 1170-1239.