Columbia subject headings:
Church controversies--Europe--History--To 1500.
Civilization, Medieval.
Power (Social sciences)--Europe--History--To 1500.
Social history--Medieval, 500-1500.
Harvard subject headings:
Church controversies--Europe--History--To1500.
Civilization, Medieval
Power (Social sciences)--Europe--History--To 1500.
Social history--Medieval, 500-1500
Princeton subject headings:
Church controversies--Europe--History--To1500.
Civilization, Medieval.
Power (Social sciences)--Europe--History--To 1500.
Social history--Medieval, 500-1500.