Source: Prácheňský graduál (Manuscriptorium: "Prácheňský kancionál")Siglum: CZ-HORm Sg 487Folios: 153vFolio: 153vSequence: 1Full text (or incipit): A rea virgaGenre: SqRubrics: Gloriose virginisFeast: Assumptio MariaeFeast (text): Assumptio MariaeCantus ID: ah53106aForm: M