Columbia subject headings:
Polish-Teutonic Knights' War, 1519-1521.
Prussia, East (Poland and Russia)--History.
Teutonic Knights--History--16th century.
Harvard subject headings:
Poland--History--Sigismund I, 1506-1548
Teutonic Knights--Foreign relations--Poland.
Teutonic Knights--History.
Princeton subject headings:
Poland--History, Military.
Poland--History--Sigismund I, 1506-1548.
Teutonic Knights--History.