Columbia subject headings:
Authors, Arab--Islamic Empire--Biography.
Muslim philosophers--Biography.
Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad, 1201-1274.
Harvard subject headings:
Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad, 1201-1274
Princeton subject headings:
Islam--Doctrines.
Islamic philosophy.
Ṭūsī, Naṣīr al-Dīn Muḥammad ibn Muḥammad, 1201-1274.