Liber usualis Missae et Officii pro Dominicis et festis I, Vel II classis : cum cantu gregoriano : ex editione vaticana adamussim excerpto : et rhythmicis signis in subsidium cantorum : a solesmensibus monachis text monographic LAT XXVII, 1605, 14, 12, 11, 4 p. XX Acervo Xavier Clavigero 20250521000000.0 000572664