Source: PL-Wn 12496 IV Graduale cistercienseFolio: 073rSequence: 4Feast: Joannis BaptistaeOffice: MASSGenre: ComCantus ID: g00243Mode: 2TFull text: Tu puer propheta altissimi vocaberis praeibis enim ante faciem domini parare vias ejusExternal image link: Image link