Columbia subject headings:
Geography, Arab--Early works to 1800.
Geography, Medieval--Early works to 1800.
Islamic Empire--Description and travel--Early works to 1800.
Islamic Empire--History--Early works to 1800.
Muslim scholars--Biography--Early works to 1800.
Harvard subject headings:
Geography, Arab--Early works to 1800.
Geography, Medieval--Early works to 1800.
Islamic Empire--Description and travel--Early works to 1800.
Islamic Empire--History--Early works to 1800.
Muslim scholars--Biography--Early works to 1800.
Princeton subject headings: