Columbia subject headings:
Cardinals.
Catholic Church. Collegium Cardinalium--History.
Celestine III, Pope, approximately 1106-1198.
Church history--12th century.
Church history--13th century.
Innocent III, Pope, 1160 or 1161-1216.
Harvard subject headings:
Catholic Church. Collegium Cardinalium--History.
Celestine III, Pope, approximately 1106-1198.
Church history--12th century.
Church history--13th century
Innocent III, Pope, 1160 or 1161-1216
Princeton subject headings:
Cardinals.
Celestine III, Pope, approximately 1106-1198.
Church history--12th century.
Church history--13th century.
Innocent III, Pope, 1160 or 1161-1216.