Quo Graviora – Brief of the Supreme Pontiff Condemning the Errors of F. L. Mersy and the Effort Against the Doctrine, the Divine Authority, and the Laws of the Church in the Ecclesiastical Province of Rhineland (Gregory XVI – Oct. 4, 1833)
Quo Graviora – Brief of the Supreme Pontiff Condemning the Errors of F. L. Mersy and the Effort Against the Doctrine, the Divine Authority, and the Laws of the Church in the Ecclesiastical Province of Rhineland (Gregory XVI – Oct. 4, 1833)
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