Columbia subject headings:
Harvard subject headings:
Bursa İli (Turkey)--History--Congresses.
Osman I, Sultan of the Turks, 1258-1326--Congresses.
Turkey--History--1288-1453--Congresses.
Princeton subject headings:
Bursa (Turkey)--History--Congresses.
Osman I, Sultan of the Turks, 1258-1326--Congresses.
Turkey--History--1288-1453--Congresses.