259th Pope of the Catholic Church
| Beginning Pontificate | 6,12.II.1922 |
|---|---|
| End Pontificate | 10.II.1939 |
| Secular Name | Achille Ratti |
| Birth | Desio (Milan) |
| Website | http://w2.vatican.va/content/pius-xi/en.html |
Encyclicals
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Rappresentanti in terra (December 31, 1929)
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Fin dal primo momento (December 23, 1922)