Columbia subject headings:
Christian heresies--History--Middle Ages, 600-1500.
City and town life--Italy--History.
Italy--Church history.
Italy--History--476-1492.
Harvard subject headings:
Christian heresies--History--Middle Ages, 600-1500
City and town life--Italy--History.
Italy--Church history.
Italy--History--476-1492.
Princeton subject headings:
Christian heresies--History--Middle Ages, 600-1500.
City and town life--Italy--History.
Italy--Church history.
Italy--History--476-1492.