Columbia subject headings:
Catholic Church--Doctrines--History--20th century.
Church--Catholicity--History of doctrines--20th century.
Lubac, Henri de, 1896-1991.
Harvard subject headings:
Catholic Church--Doctrines--History--20th century.
Christian union--History of doctrines--20th century.
Lubac, Henri de, 1896-1991
Princeton subject headings: