Columbia subject headings:
Harvard subject headings:
Abbadia San Salvatore (Siena, Italy)--History--Sources.
Monasteries--Italy--Tuscany--History--Middle Ages, 600-1500.
Monasticism and religious orders--Italy--Tuscany--History--Middle Ages, 600-1500.
San Salvatore del Monte Amiata (Abbey)--History--Sources.
Princeton subject headings:
San Salvatore del Monte Amiata (Abbey)--History--Sources.