Columbia subject headings:
Church and state--Europe--Catholic Church.
Divine right of kings.
Ecclesiastical law.
Germany--History--Franconian House, 1024-1125.
Investiture.
Harvard subject headings:
Church and state--Europe--Catholic Church.
Divine right of kings.
Ecclesiastical law.
Germany--History--Franconian House, 1024-1125.
Investiture.
Princeton subject headings: