Columbia subject headings:
Authority--Religious aspects--Catholic Church.
Papacy--History--20th century.
Papacy--History--21st century.
Popes--Infallibility.
Vatican Council (2nd : 1962-1965 : Basilica di San Pietro in Vaticano)
Harvard subject headings:
Authority--Religious aspects--Catholic Church.
Papacy--History--20th century
Papacy--History--21st century.
Popes--Infallibility
Vatican Council (2nd : 1962-1965 : Basilica di San Pietro in Vaticano)
Princeton subject headings: