Columbia subject headings:
Benedict XI, Pope, 1240-1304.
Church history--13th century.
Church history--14th century.
Popes--Biography.
Harvard subject headings:
Benedict XI, Pope, 1240-1304.
Church history--13th century
Church history--14th century.
Popes--Biography
Princeton subject headings:
Benedict XI, Pope, 1240-1304.
Popes--Biography.