HIS MATERIAL IS COVERED GEOGRAPHICALLY ACCORDING TO LITURGICAL AREAS:
-Rome from John the Deacon and the Gelasian Sacramentary to the 12th century
-Milan and Northern Italy from Ambrose to the Ordo of Beroldus
-Gaul and Germany from the 7th12th century
-Spain from Isidore of Seville to the Mozarabic Liber Ordinum
Paperback, 6 x 9, 226 pages.