RelBib: The Social Thought of John XXIII: Mater Et Magistra. By Jean-Yves Calvez, S.J., The Social Teachings of Pope John XXIII. By John F. Cronin, S.S. and John XXIII: Pope Paul on His Predecessor and a Documentation. By the editors of Herder Correspondence
https://relbib.de/Record/1823089682