Columbia subject headings:
Church history--Middle Ages, 600-1500.
Church history--Middle Ages.
Innocent II, Pope, -1143.
Papacy--History.
Harvard subject headings:
Church history--Middle Ages, 600-1500
Innocent II, Pope, -1143.
Papacy--History
Princeton subject headings:
Church history--Middle Ages, 600-1500.
Innocent II, Pope, -1143.
Papacy--History.