Columbia subject headings:
Najm al-Dīn Rāzī, ʻAbd Allāh ibn Muḥammad, -1256 or 1257--Congresses.
Harvard subject headings:
Najm al-Dīn Rāzī, ʻAbd Allāh ibn Muḥammad, -1256 or 1257--Congresses.
Princeton subject headings:
Najm al-Dīn Rāzī, ʻAbd Allāh ibn Muḥammad, d. 1256 or 7--Congresses.