Source: SK-BRnm (Bratislava) Slovenské národné múzeum - Hudobné múzeum GradualeFolio: 087rSequence: 1Full text: Avertantur retrorsum et erubescant qui cogitant mihi malaFeast: Fer. 5 Hebd. 2 Quad.Office: MASSGenre: InVPosition: 01Cantus ID: g02026a.1Mode: 7