Columbia subject headings:
Epic poetry, Latin (Medieval and modern)--History and criticism.
Ethics in literature.
Knights and knighthood in literature.
Romances, Latin (Medieval and modern)--History and criticism.
Ruodlieb.
Harvard subject headings:
Didactic poetry, Latin (Medieval and modern)--History and criticism.
Epic poetry, Latin (Medieval and modern)--History and criticism.
Ethics in literature.
Knights and knighthood in literature.
Romances, Latin (Medieval and modern)--History and criticism.
Ruodlieb.
Princeton subject headings:
Latin literature, Medieval and modern--Criticism and interpretation.
Ruodlieb--Criticism and interpretation.