Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--History--16th century.
Balkan Peninsula--History--17th century.
Balkan Peninsula--History.
Catholic Church--Foreign relations--Turkey.
Hungary--History--Turkish occupation, 1526-1699
Turkey--Foreign relations--Catholic Church.
Turks--Balkan Peninsula--History.
Princeton subject headings:
Balkan Peninsula--History.
Catholic Church--Foreign relations--Turkey.
Hungary--History--Turkish occupation, 1526-1699.
Turkey--Foreign relations--Catholic Church.