Encyclical letter of Pope Pius XI on reconstructing the social order.

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• 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)
• Quadragesimo anno : encyclical letter on reconstructing the social order /
  Wedi'i Greu: (1942)
• Quadragesimo Anno: Encyclical Letter of Pope Pius XI on Reconstructing the Social Order
  gan: Pius XI, Pope, 1857-1939; Catholic Church. Pope (1922-1939 : Pius XI)
  Wedi'i Greu: (1931)
• Pope Pius XI and social reconstruction. An introduction to the Encyclical Quadragesimo Anno.
  gan: Watt, Lewis, 1885-
  Wedi'i Greu: (1950)
• On the reconstruction of the social order (Quadragesimo anno) Encyclical of His Holiness Pope Pius XI.
  gan: Pius, Pope; Catholic Church. Pope (1922-1939 : Pius XI)
  Wedi'i Greu: (1938)