Encyclical letter of His Holiness Pius XI, by divine providence, Pope : to the patriarchs, primates, archbishops, bishops and other ordinaries, in peace and communion with the apostolic see, on offering prayer and expiation to the sacred heart of Jesus in the present distress of the human race.

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• Encyclical letter of His Holiness Pius XI, by divine providence, Pope : to the patriarchs, primates, archbishops, bishops and other ordinaries, in peace and communion with the apostolic see, on offering prayer and expiation to the sacred heart of Jesus in the present distress of the human race.
  Wedi'i Greu: (1932)
• Encyclical letter (Divini Redemptoris ) of His Holiness Pius XI by divine providence Pope...on atheistic communism.
  Wedi'i Greu: (1937)
• After Forty Years, Encyclical Letter of His Holiness, Pius XI by Divine Providence Pope
  gan: Pius, Pope; Catholic Church. Pope (1922-1939 : Pius XI)
  Wedi'i Greu: (1931)
• Encyclical letter of His Holiness, Pius XI, by Divine Providence Pope to our venerable brethren, the patriarchs, primates, archbishops, bishops and other ordinaries, in peace and communion with the Apostolic See concerning Catholic Action.
  Wedi'i Greu: (1931)
• Encyclical letter of His Holiness Pius XI, by Divine providence, pope to our venerable brethren: the patriarchs, primates, archbishops, bishops and other ordinaries, in peace and communion with the Apostolic See, and to all the faithful of the Catholic world, on reconstructing the social order and perfecting it conformably to the precepts of the Gospel, in commemoration of the fortieth anniversary of the encyclical "Rerum novarum."
  Wedi'i Greu: (1940)