Columbia subject headings:
Bernard, of Clairvaux, Saint, 1090 or 1091-1153.
Crusades--Second, 1147-1149.
Harvard subject headings:
Bernard, of Clairvaux, Saint, 1090 or 1091-1153
Crusades--Second, 1147-1149
Princeton subject headings:
Bernard, of Clairvaux, Saint, 1090 or 1091-1153.
Crusades--Second, 1147-1149.