“Publish by the Sacred Congregation of Rites on May 25, 1967 Index Introduction Part I  Some general principles on mystery of Eucharist Part II Â...”
“Publish by the Sacred Congregation of Rites  March 5, 1967 Preface  I. Some General Norms II. The Singing of the Divine Office III. Sacred Music in the...”
“Encyclical of Pope Paul VI On The Holy Eucharist Published September 3, 1965 To His Venerable Brothers the Patriarchs, Primates, Archbishops, Bishops and...”