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Rh regularly and of set purpose, attack religion or morality, or propagate anti-Catholic views.

Rule 10. The following classes of publications require the approbation of the bishop of the place where the work is to be published, or of some higher authority, which is to be printed in the beginning or at the end of the work and must be renewed for every new edition.

a. Books on theology, Church history, canon law, natural theology and ethics, and all editions of the Bible or parts of it in any language.

b. Books and pamphlets of devotion, religious instruction, and practical and mystical piety.

c. Books, pamphlets and leaflets, printed or reproduced in any other way, which relate apparitions, visions, revelations, miracles, etc. not yet passed on by the Church; the plea that they are destined for private circulation does not exempt these publications.