Columbia subject headings:
French poetry--To 1500--History and criticism.
Romances--History and criticism.
Harvard subject headings:
Chrétien, de Troyes, active 12th century--Criticism and interpretation.
French poetry--To 1500--History and criticism
Romances--History and criticism.
Princeton subject headings:
Chrétien, de Troyes, active 12th century--Criticism and interpretation.
Romance-language poetry--History and criticism.