Columbia subject headings:
Arthurian romances--History and criticism.
Grail--Legends--History and criticism.
Robert, de Boron, active 13th century. Roman de l'estoire dou Graal.
Harvard subject headings:
Arthurian romances--History and criticism.
Grail--Legends--History and criticism
Robert, de Boron, active 13th century. Roman de l'estoire dou Graal.
Princeton subject headings:
Grail--Legends--History and criticism.
Robert, de Boron, active 13th century. Roman de l'estoire dou Graal.