Columbia subject headings:
Abbasids.
Caliphs--Biography.
Hārūn al-Rashīd, Caliph, approximately 763-809--In literature.
Hārūn al-Rashīd, Caliph, approximately 763-809.
Islamic Empire--History--750-1258.
Islamic Empire--Kings and rulers--Biography.
Harvard subject headings:
Abbasids.
Caliphs--Biography.
Hārūn al-Rashīd, Caliph, approximately 763-809.
Islamic Empire--History--750-1258.
Islamic Empire--Kings and rulers--Biography.
Princeton subject headings:
Abbasids.
Barmakid family.
Caliphs--Biography.
Hārūn al-Rashīd, Caliph, approximately 763-809.
Islamic Empire--History--750-1258--Historiography.
Islamic Empire--Kings and rulers--Biography.