Columbia subject headings:
Harvard subject headings:
Arthurian romances--History and criticism.
French literature--To 1500--History and criticism
Grail--Legends--History and criticism
Knights and knighthood in literature.
Trojan War--Literature and the war
Princeton subject headings:
Arthurian romances--History and criticism.
French literature--To 1500--History and criticism.
Grail--Legends--History and criticism.