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  • Slavorum Apostoli: Encyclical Epistle in Commemoration of the Eleventh Centenary of the Evangelizing Work of Saints Cyril and Methodius, by Pope John Paul II (2 June 1985). May be read online at the Holy See, which has a second copy at this page, at IntraText.com, at the John Paul II Foundation, and at the Catholic Information Network.
  • Slavorum Apostoli: Encyklika w tysiąc setną rocznicę dzieła ewangelizacji świętych Cyryla i Metodego, przez Papiez Jan Paweł II (02 Czerwca 1985). W języku Polskim. Dostępne na Opoka.org. [N.B., If the translation from English is wrong, please correct me. Thanks.]
  • Slavorum Apostoli: Epistola Enciclica nel Ricordo dell’opera Evangelizzatrice dei Santi Cirillo e Metodio dopo Undici Secoli, da Papa Giovanni Paolo II (2 Giugnio 1985). Disponibile presso Maranatha.it [N.B., If the translation from English is wrong, please correct me. Thanks.]

In observance of the Feast of Saints Cyril and Methodius, Apostles of the Slavs and Patrons of Europe, according to the Extraordinary Form of the Roman Rite.