Encycliques et messages sociaux : Leon XIII, Pie XI, Pie XII /

Eitemau Tebyg

• The social encyclicals /
  gan: Lucey, Cornelius
  Cyhoeddwyd: (1938)
• The encyclicals of Pius XI /
  Cyhoeddwyd: (1927)
• Apostolic letter of His Holiness Pope Paul VI to Cardinal Maurice Roy ... on the occasion of the eightieth anniversary of the encyclical Rerum novarum.
  Cyhoeddwyd: (1971)
• Five great encyclicals : labor, education, marriage, reconstructing the social order, atheistic communism ... with discussion club outlines by Rev. Gerald C. Treacy, S.J.
  Cyhoeddwyd: (1939)
• Encyclical letter on the development of peoples (Populorum Progressio) of ... Paul VI ... Pope : to the bishops, priests, religious, the faithful, and to all men of good will.
  Cyhoeddwyd: (1967)