Columbia subject headings:
Harvard subject headings:
Agnellus, of Ravenna, Abbot, active 9th century. Liber pontificalis ecclesiae Ravennatis.
Ravenna (Italy)--Church history.
Princeton subject headings:
Agnellus, of Ravenna, Abbot, active 9th century.
Agnellus, of Ravenna, Abbot, active 9th century. Liber pontificalis ecclesiae Ravennatis.
Bishops--Italy--Ravenna--Biography.
Catholic Church--Italy--Ravenna--History.
Ravenna (Italy)--Church history.