Columbia subject headings:
Artisans--Turkey--History--Congresses.
Guilds--Turkey--History--Congresses.
Merchants--Turkey--History--Congresses.
Harvard subject headings:
Artisans--Turkey--History--Congresses.
Guilds--Turkey--History--Congresses.
Merchants--Turkey--History--Congresses.
Princeton subject headings:
Artisans--Turkey--Congresses.
Guilds--Turkey--Congresses.