Source: Graduale Praemonstratense, pars prima (Proprium de Tempore)Siglum: CZ-TPk E 45Folios: 234r-235rFolio: 234rSequence: 1Full text (or incipit): Salve porta perpetue lucis Genre: SqRubrics2: In adventu domini de beata virgineFeast: De BMV Adv.Feast (text): De BMV Adv.Cantus ID: ah53108Form: M
