Graduale Sacrosanctae Romanae Ecclesiae de tempore et de Sanctis : primum Sancti Pii X iussu restitutum et editum, Pauli VI Pontificis Maximi Cura nunc recognitum : ad exemplar "Ordinis cantus Missae" dispositum et rhythmicis signis a Solesmensibus monachis diligenter ornatum.
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