Columbia subject headings:
Harvard subject headings:
Catholic Church--Doctrines--History--20th century.
John Paul II, Pope, 1920-2005
Küng, Hans, 1928-2021
Schillebeeckx, Edward, 1914-2009
Princeton subject headings:
John Paul II, Pope, 1920-2005.
Küng, Hans, 1928-2021.
Schillebeeckx, Edward, 1914-2009.