Columbia subject headings:
Kosovo, Battle of, Kosovo, 1389--Congresses.
Serbia--History--To 1456--Congresses.
Turkey--History--1288-1453--Congresses.
Harvard subject headings:
Kosovo, Battle of, Kosovo, 1389.
Serbia--History--To 1456--Congresses.
Turkey--History--1288-1453--Congresses.
Princeton subject headings: