Caeremoniae regularis observantiae sanctissimi patris nostri Benedicti ex ipsiusRegula sumptae, secundum quod in sacris locis, scilicet Specu et Monasterio Sublacensi practicantur

Benedictines Religious life and customs Liturgy Sacro Speco (Abbey : Subiaco, Italy) Catholic Church History Monasticism and religious orders Rules