Columbia subject headings:
Church history--Middle Ages, 600-1500.
Civilization, Medieval.
Europe--Church history--600-1500.
Europe--History--476-1492.
Historiography.
Middle Ages.
Harvard subject headings:
Church and state--Europe--History
Church history--Middle Ages, 600-1500
Europe--Church history--600-1500.
Europe--History--476-1492.
Müller, Heribert, 1946-
Princeton subject headings:
Church and state--Europe--History.
Church history--Middle Ages, 600-1500.
Europe--Church history--600-1500.
Europe--History--476-1492.
Müller, Heribert, 1946-