Encyclical letter of his holiness Pius XII by divine providence Pope to his venerable brethren the Patriarchs, Primates, Archbishops, Bishops and other Ordinaries at peace and in communion with the Apostolic See on Saint Cyril, Patricarch of Alexandria in celebration of the fifteenth centenary of his holy death / Pius XII ; [translated by canon G.D. Smith].    London :  Catholic truth society,  1944 . 23 s.