Columbia subject headings:
Harvard subject headings:
Arthurian romances--History and criticism.
Chrétien, de Troyes, active 12th century. Perceval le Gallois.
French language--To 1300--Glossaries, vocabularies, etc.
Knights and knighthood in literature.
Perceval (Legendary character)--Romances--History and criticism.
Wauchier de Denain, active 12th century--Criticism and interpretation.
Princeton subject headings:
Chrétien, de Troyes, active 12th century. Perceval le Gallois--Criticism, Textual.
French language--To 1300--Lexicology.
French poetry--To 1500--History and criticism.