Source: PL-WRu I F 413 Cistercian Gradual (Silesia)Folio: 016rSequence: 2Feast: Dom. SeptuagesimaeOffice: MASSGenre: GrCantus ID: g00632Mode: 3Full text: Adjutor in opportunitatibus in tribulatione sperent in te qui noverunt te quoniam non derelinquis quaerentes te domine