Source: Sequentiarius latino-bohemicus - Sekvenciář klementinský (Orel)Siglum: CZ-Pu IV D 19Folios: 53r-53vFolio: 053rSequence: 1Full text (or incipit): Ex lumine sit radiusGenre: SqRubrics: De sancto Erasmi [sic]Feast: ErasmiFeast (text): ErasmiCantus ID: ah44131Form: C