Motu Proprio of Pope Pius X and Other Papal Documents on Liturgical Music, including Pope Pius X's letter to the cardinal vicar of Rome, regulations for the province of Rome, and the pastoral letter on music of Archbishop Blenk of New Orleans.

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• Motu proprio of Pope Pius X : and other papal documents on liturgical music, including Pope Pius X's letter to the cardinal vicar of Rome, regulations for the province of Rome, and the pastoral letter on music of Archbishop Blenk of New Orleans.
  gan: Pius X, Pope, 1835-1914; Catholic Church. Pope (1903-1914 : Pius X)
  Wedi'i Greu: (1928)
• The motu proprio of church music of Pope Pius X : a new translation and commentary /
  Wedi'i Greu: (1950)
• Pope Pius X on Sacred Music
  gan: Pius X, Pope, 1835-1914
  Wedi'i Greu: (1903)
• Diocese of Pittsburgh Church music regulations (based on Pope Pius X's Motu proprio of Nov. 22, 1903) : to be faithfully observed by the clergy and laity
  Wedi'i Greu: (19--)
• The Mortu proprio of Pope Pius X : dated June 29, 1910 [i.e. Sept. 1, 1910].
  gan: Pius X, Pope, 1835-1914
  Wedi'i Greu: (1910)