Liturgical BookMartyrologium Romanum (1928)
editio secunda post typicam
by Sacred Congregation of Rites (1928)
liturgy saints
EncyclicalMortalium animos
Promoting true religious unity
by Pope Pius XI (1928.01.06)
ecumenism
EncyclicalMiserentissimus Redemptor
On reparation to the Sacred Heart
by Pope Pius XI (1928.05.08)
Sacred Heart
Apostolic LetterFriburgensis archidiœcesis
by Pope Pius XI (1928.07.11)
Apostolic LetterDilectus filius
Apostolic LetterDecessor Noster
Apostolic LetterCum tu
by Pope Pius XI (1928.07.12)
Apostolic LetterQuum ex Apostolico
by Pope Pius XI (1928.07.18)
Apostolic LetterPer similes
Apostolic LetterEx hac
by Pope Pius XI (1928.07.19)
Apostolic LetterInter præstantiores
by Pope Pius XI (1928.08.02)
Apostolic LetterProvidentia opportuna
by Pope Pius XI (1928.08.15)
Apostolic LetterLeodiensis diœcesis
by Pope Pius XI (1928.08.24)
Apostolic LetterSagiensis diœcesis
by Pope Pius XI (1928.08.29)
EncyclicalRerum orientalium
On the reunion with the Eastern Churches
by Pope Pius XI (1928.09.08)
Eastern Churches
Apostolic LetterMonasterii Sanctæ Mariæ
by Pope Pius XI (1928.09.29)
Apostolic LetterPrædecessor nosterPrædecessor noster
by Pope Pius XI (1928.10.15)
Apostolic LetterCommissum nobis
BullDivini cultus
On liturgical music
by Pope Pius XI (1928.12.20)
music
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