Columbia subject headings:
Harvard subject headings:
Abelard, Peter, 1079-1142
Bernard, of Clairvaux, Saint, 1090 or 1091-1153
Church history--Middle Ages, 600-1500
Princeton subject headings:
Abelard, Peter, 1079-1142.
Bernard, of Clairvaux, Saint, 1090 or 1091-1153.
Twelfth century.