Columbia subject headings:
Harvard subject headings:
Church history--Middle Ages, 600-1500
Monasticism and religious orders--Italy--History--Middle Ages, 600-1500.
Montecassino (Monastery)
Normans--Italy--History.
Victor III, Pope, 1027-1087.
Princeton subject headings:
Montecassino (Monastery)
Normans--Italy--History.
Victor III, Pope, 1027-1087.