Columbia subject headings:
Abū Ḥayyān al-Tawḥīdī, ʻAlī ibn Muḥammad, active 10th century--Criticism and interpretation.
Islamic Empire--History--750-1258.
Islamic Empire--Intellectual life.
Islamic Empire--Social conditions.
Harvard subject headings:
Abū Ḥayyān al-Tawḥīdī, ʻAlī ibn Muḥammad, active 10th century--Criticism and interpretation.
Islamic Empire--History--750-1258
Islamic Empire--Intellectual life
Islamic Empire--Social conditions--History.
Princeton subject headings: