Columbia subject headings:
Harvard subject headings:
Achates (Legendary character) in literature.
Aeneas (Legendary character)--In literature.
Epic poetry, Latin--History and criticism.
Friendship in literature.
Rome--In literature.
Virgil--Characters--Achates.
Virgil. Aeneis.
Princeton subject headings:
Virgil--Characters--Fidus Achates.
Virgil. Aeneis.