Columbia subject headings:
Agnellus, of Ravenna, Abbot, active 9th century. Liber pontificalis ecclesiae Ravennatis.
Bishops--Portraits.
Harvard subject headings:
Agnellus, of Ravenna, Abbot, active 9th century. Liber pontificalis ecclesiae Ravennatis.
Bishops--Portraits.
Princeton subject headings:
Agnellus, of Ravenna, Abbot, active 9th century. Liber pontificalis ecclesiae Ravennatis.
Bishops--Portraits.