With an Introduction and Complementary Notes by Lothar Roos. Original (published in German): Joseph Kardinal Höffner, CHRISTLICHE GESELLSCHAFTSLEHRE, edited, revised and supplemented by Lothar Roos Editor: Butzon & Bercker Publishing Company: Butzon & Bercker • D-47623 Kevelaer, 1997 ISBN 3-7666-0324-8.
English and Chinese translation and digitalization sponsored and organized by ORDO SOCIALIS.
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