Columbia subject headings:
Papacy--History--To 1309.
Spain--Church history.
Spain--History--711-1516.
Spain--History--Gothic period, 414-711.
Harvard subject headings:
Catholic Church--Foreign relations--Spain.
Church and state--Spain--History--To 1500.
Church history--Middle Ages, 600-1500
Spain--Foreign relations--Catholic Church.
Princeton subject headings:
Catholic Church--Foreign relations--Spain.
Church and state--Spain--History--To 1500.
Church history--Middle Ages, 600-1500.
Spain--Foreign relations--Catholic Church.