Columbia subject headings:
Harvard subject headings:
Excommunication (Canon law)--History--To 1500.
Excommunication--History--To 1500.
Rites and ceremonies--History--To 1500.
Rituals (Liturgical books)--History--To 1500.
Princeton subject headings:
Excommunication (Canon law)--History--To 1500.
Excommunication--History--To 1500.
Rites and ceremonies--History--To 1500.
Rituals (Liturgical books)--History--To 1500.