Columbia subject headings:
Brotherhoods--Turkey--History.
Guilds--Turkey--History.
Sufism--Turkey.
Turkey--Economic conditions.
Turkey--Social conditions.
Harvard subject headings:
Brotherhoods--Turkey--History.
Guilds--Turkey--History.
Sufism--Turkey
Turkey--Economic conditions.
Turkey--Social conditions.
Princeton subject headings:
Brotherhoods--Turkey--History.
Guilds--Turkey--History.
Sufism--Turkey.
Turkey--Economic conditions.
Turkey--Social conditions.