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