Encyclical letter of His Holiness Pius XI, by Divine providence, pope ... 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."

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• Encyclical letter of His Holiness Pius XI, by Divine providence, pope ... 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)
• Encyclical letter (Quadragesimo anno) of His Holiness Pope Pius XI, on reconstructing the social order and perfecting it conformably to the precepts of the gospel, in commemoration of the fortieth anniversary of the enclyclical "Rerum novarum."
  gan: Pius XI, Pope, 1857-1939; Catholic Church. Pope (1922-1939 : Pius XI)
  Wedi'i Greu: (1954)
• Rerum novarum : encyclical letter of Pope Leo XIII on the condition of labor.
  Wedi'i Greu: (1900)
• 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)
• Forty years after : reconstructing the social order : Encyclical letter of His Holiness Pope Pius XI.
  Wedi'i Greu: (1935)