Source: Graduale latino-bohemicumFolios: 118r-120rFolio: 118rSequence: 1Full text (or incipit): Ab arce sidereaOffice: MGenre: SqFeast: De BMV Adv.Cantus ID: ah08005Form: MNotes: Rubric "Re" at the left margin.Image link: https://imagines.manuscriptorium.com/loris/AIPDIG-NKCR__VI_B_24_____2JDQ4VD-cs/I…
