Columbia subject headings:
Badia greca di Grottaferrata di Maria Santissima--History.
Church history--Middle Ages, 600-1500.
Grottaferrata (Italy)--Church history.
Harvard subject headings:
Badia greca di Grottaferrata di Maria Santissima--History.
Badia greca di Grottaferrata di Maria Santissima.
Church history--Middle Ages, 600-1500
Grottaferrata (Italy)--Buildings, structures, etc.
Grottaferrata (Italy)--Church history.
Monasteries--Italy--Grottaferrata.
Monastic and religious life--History--Middle Ages, 600-1500.
Monastic and religious life--Italy--Grottaferrata.
Princeton subject headings:
Badia greca di Grottaferrata di Maria Santissima--History.
Church history--Middle Ages, 600-1500.
Grottaferrata (Italy)--Church history.