Akademik

Æterni Patris
Æterni Patris
The Apostolic Letter of Pius IX, by which he summoned the Vatican Council. It is dated Rome, 29 June, 1868
An encyclical letter of Pope Leo XIII (issued 4 August, 1879); not to be confused with the apostolic letter of the same name written by Pope Pius IX

Catholic Encyclopedia. . 2006.


Catholic encyclopedia.