Source: PL-WRu I F 413 Cistercian Gradual (Silesia)Folio: 174rSequence: 6Feast: Nativitas MariaeOffice: MASSGenre: ACantus ID: 004591Mode: 6TFull text: Regali ex progenie Maria exorta refulget cujus precibus nos adjuvari mente et spiritu devotissime poscimusNotes: euouae