Source: Graduale magnumSiglum: PL-WRu B 1714Folios: 261v-262vFolio: 261vSequence: 1Full text (or incipit): Benediccio trine unitatiGenre: SqRubrics: De sancta TrinitateFeast: De TrinitateFeast (text): De TrinitateCantus ID: ah50243Form: M