Columbia subject headings:
Catholic Church--Doctrines--History--20th century.
Catholic Church--Liturgy.
Church.
Jesus Christ--Mystical body.
Vatican Council (2nd : 1962-1965 : Basilica di San Pietro in Vaticano)
Harvard subject headings:
Vatican Council (2nd : 1962-1965 : Basilica di San Pietro in Vaticano)
Princeton subject headings: