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Apostolic letter of Pope Paul VI by which were decreed certain prescriptions of the Second Vatican Council's Constitution on the Litrugy. Among its provisions was the establishment of diocesan liturgical commissions and the requirement that all litrugical texts by formally approved by the Holy See (January 25, 1964).
All items in this dictionary are from Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.