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