Robuta

https://catholiclibrary.org/library/view?docId=Medieval-OR/AnHymAuthorXXXIIIPiaDictaminaAnalectaHymnica.00000144.la.html&chunk.id=00000261 AnHym Author, Analecta Hymnica – XXXIII. Pia Dictamina pia dictaminaauthoranalectahymnicaxxxiii