Quo Primum and De Defectibus - Pius V

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Pope St. Pius V, July 14, 1570. Issued to safeguard the validity of the Mass. Should be read and studied by every Catholic truly concerned about the changes that have been introduced into the liturgy.

  • July 14, 1570
  • On the Roman Missal
  • Stapled booklet
  • 10 pages
  • 7 x 5.1 inches
  • ENP05-640