Encyclical letter of his holiness John XXIII, by divine providence Pope, to his venerable brethren the patriarchs, primates, archbishops, bishops and all other local ordinaries that are at peace and in communion with the Apostolic See, commemorating the fifteenth centenary of the death of St Leo the Great, Pope and doctor of the church - a call to unity.
Häftad bok. Catholic Truth Society . 1962. 24 sidor.
Nära nyskick.
[Translated by the Rev. H. E. Winston] Engelsk text. [Latin text published in the 'Acta apostolicae sedis', vol. 53, 1961, no. 15] Namnteckn. å titelbladet.