Columbia subject headings:
Arabs--History--Early works to 1800.
Islamic Empire--History--Early works to 1800.
World history--Early works to 1800.
Harvard subject headings:
Arabs--History--Early works to 1800.
Islamic Empire--History--Early works to 1800.
World history--Early works to 1800
Princeton subject headings:
Arabs--History--Early works to 1800.
Islamic Empire--History--Early works to 1800.
World history--Early works to 1800.