Source: Missale Ordinis PraemonstratensisSiglum: CZ-TPk E.9Folios: 290v-291rFolio: 290vSequence: 1Full text (or incipit): Letetur ecclesiaGenre: SqRubrics: SequenciaFeast: Decem Millium MartyrumFeast (text): Decem Millium MartyrumCantus ID: ah09102Form: T
