Columbia subject headings:
Laity--Catholic Church--History.
Montecassino (Monastery)--History.
Harvard subject headings:
Laity--Catholic Church--History.
Monasticism and religious orders--Italy--Cassino Region--History--Middle Ages, 600-1500.
Montecassino (Monastery)--History.
Princeton subject headings:
Laity--Catholic Church--History.
Montecassino (Monastery)--History.