Columbia subject headings:
Monastic and religious life--Italy--History--Middle Ages, 600-1500.
Peter Damian, Saint, 1007?-1072.
Romagna (Italy)
Harvard subject headings:
Monastic and religious life--Italy--History--Middle Ages, 600-1500.
Monastic and religious life--Italy--Romagna--History--Middle Ages, 600-1500.
Peter Damian, Saint, 1007?-1072.
Romagna (Italy)
Romagna (Italy)--Church history.
Princeton subject headings:
Monastic and religious life--History--Middle Ages, 600-1500.
Monastic and religious life--Italy--Romagna.
Peter Damian, Saint, 1007?-1072.