Columbia subject headings:
Rahner, Karl, 1904-1984.
Sacraments--Catholic Church--History of doctrines--20th century.
The sacraments.
Theology, Doctrinal--Germany--History--20th century.
Word of God (Christian theology)--History of doctrines--20th century.
Harvard subject headings:
Catholic Church--Doctrines.
Catholic Church--Liturgy--History--20th century.
Sacraments--Catholic Church
Princeton subject headings: