. "Psallat mater gracie, gaudet Ecclesia" . . "13972943" . "Connu par le manuscrit conserv\u00E9 \u00E0 Worcester, Cathedral Library, Add. 68"@fr . . "Connu par le manuscrit conserv\u00E9 \u00E0 Worcester, Cathedral Library, Add. 68"@fr . . . . . . "Psallat mater gracie, gaudet Ecclesia" . "Psallat mater gracie, gaudet Ecclesia" . "Prolis eterne genitor loquens de Filio" . .