Columbia subject headings:
Harvard subject headings:
Sufis--Turkey--Biography--Congresses.
Sufism--Turkey--Congresses.
Princeton subject headings:
Kumushkhānawī, Aḥmad ibn Muṣṭafá, 1812 or 1813-1893 or 1894--Congresses.
Naqshabandīyah--Turkey--Biography--Congresses.
Sufis--Turkey--Biography--Congresses.
Sufism--Turkey--Congresses.