Columbia subject headings:
Mahdi--Early works to 1800.
Mahdism--Early works to 1800.
Mahdī, Muḥammad ibn al-Ḥasan, 869---Early works to 1800.
Harvard subject headings:
Mahdi--Early works to 1800.
Mahdism--Early works to 1800.
Mahdī, Muḥammad ibn al-Ḥasan, 869---Early works to 1800.
Princeton subject headings:
Mahdi--Early works to 1800.
Mahdism--Early works to 1800.
Mahdī, Muḥammad ibn al-Ḥasan, 869---Early works to 1800.