Columbia subject headings:
Harvard subject headings:
Abū Ḥayyān al-Tawḥīdī, ʻAlī ibn Muḥammad, active 10th century
Islamic philosophy--Early works to 1800.
Princeton subject headings:
Abū Ḥayyān al-Tawḥīdī, ʻAlī ibn Muḥammad, active 10th century.
Islamic philosophy--Early works to 1800.
Islamic philosophy.