Columbia subject headings:
Harvard subject headings:
Manuscripts, Latin (Medieval and modern)--France--Laon--Facsimiles.
Mythology, Classical--Early works to 1800
Sedulius, active 5th century--Criticism and interpretation--Early works to 1800.
Virgil--Criticism and interpretation--Early works to 1800.
Princeton subject headings:
Sedulius, active 5th century--Dictionaries, indexes, etc.
Virgil--Dictionaries, indexes, etc.