Columbia subject headings:
Arabian Peninsula--History.
Baṣrah (Iraq)--History.
Hasa (Saudi Arabia : Province)--History.
Hejaz (Saudi Arabia)--History.
Islamic Empire--History.
Najd (Saudi Arabia)--History.
Saudi Arabia--History.
Harvard subject headings:
Arabian Peninsula--History.
Baṣrah (Iraq)--History.
Hejaz (Saudi Arabia)--History.
Islamic Empire--History.
Saudi Arabia--History.
Princeton subject headings:
Arabian Peninsula--History.
Baṣrah (Iraq)--History.
Hasa (Saudi Arabia : Province)--History.
Hejaz (Saudi Arabia)--History.
Islamic Empire--History.
Najd (Saudi Arabia)--History.
Saudi Arabia--History.