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
By: translated from the Latin by H.E. Winstone.
Publisher: C.T.S.
Published: 1962
Place of publication: London
Language: eng
Work titles: Aeterna dei sapientia
Notes: Latin text published in the 'Acta apostolicae sedis', vol. 53, 1961, no. 15.