Columbia subject headings:
Benedict XVI, Pope, 1927-
Bonaventure, Saint, Cardinal, approximately 1217-1274.
Revelation.
Harvard subject headings:
Benedict XVI, Pope, 1927-
Benedict XVI, Pope, 1927---Congresses.
Bonaventure, Saint, Cardinal, approximately 1217-1274
Bonaventure, Saint, Cardinal, approximately 1217-1274--Congresses.
Revelation.
Princeton subject headings: