Source: PL-Wn 12722 V Graduał opata tynieckiego MścisławaFolio: 001rSequence: 2Feast: Dom. 1 AdventusOffice: MASSGenre: InVCantus ID: g00489aMode: 8Differentia: G4Full text: Vias tuas domine demonstra mihi et semitas tuas edoce meMarginalia: A