Columbia subject headings:
Dervishes.
Music--Religious aspects--Islam.
Sufism--Egypt.
Sufism--Functionaries.
Sufism--Rituals.
Harvard subject headings:
Dervishes--Egypt.
Music--Religious aspects--Islam
Sufism--Egypt.
Sufism--Functionaries.
Sufism--Rituals
Princeton subject headings:
Dervishes.
Music--Religious aspects--Islam.
Sufism--Egypt.
Sufism--Functionaries.
Sufism--Rituals.