Catholic Church. Pope (1939-1958 : Pius XII) & Pius XII, P. Humani generis: Encyclical letter of Pope Pius XII : concering some false opinions which threaten to undermine the foundations of Catholic doctrine : Issued August 12, 1950. National Catholic Welfare Conference.

Catholic Church. Pope (1939-1958 : Pius XII) and Pope Pius XII. Humani Generis: Encyclical Letter of Pope Pius XII : Concering Some False Opinions Which Threaten to Undermine the Foundations of Catholic Doctrine : Issued August 12, 1950. Washington, D.C.: National Catholic Welfare Conference.

Catholic Church. Pope (1939-1958 : Pius XII) and Pope Pius XII. Humani Generis: Encyclical Letter of Pope Pius XII : Concering Some False Opinions Which Threaten to Undermine the Foundations of Catholic Doctrine : Issued August 12, 1950. National Catholic Welfare Conference.