Home › Authors › Benedictines. Congressus Abbatum ac Priorum Conventualium Congregationum Confoederatarum O.S.B. 👤 Benedictines. Congressus Abbatum ac Priorum Conventualium Congregationum Confoederatarum O.S.B. 1 book Books by Benedictines. Congressus Abbatum ac Priorum Conventualium Congregationum Confoederatarum O.S.B. Acta Congressus Abbatum ac Pri Acta Congressus Abbatum ac Priorum Conventualium Congregationum Confoederatarum O.S.B. in aedibus S. Anselmi de Urbe 1975