Source: SK-BRl (Bratislava) Rkp. 387 Missale NotatumFolio: 138rSequence: 3Full text: Alleluia Gaudete justi*Feast: Joannis Port. Lat.Office: MASSGenre: AlPosition: 1Cantus ID: g00024Image link: http://147.213.131.4:85/digi/Rkp_zv_387/LKB___RKP_ZV_387_____24TL/SK/1_1_0138R.h…