Columbia subject headings:
Harvard subject headings:
Arthurian romances.
Chrétien, de Troyes, active 12th century. Perceval le Gallois.
Chrétien, de Troyes, active 12th century. Perceval le Gallois. French & German.
Grail--Legends
Perceval (Legendary character)--Romances.
Princeton subject headings:
Arthurian romances.
Grail--Legends.
Legends.
Perceval (Legendary character)--Romances.