Columbia subject headings:
Arthurian romances--History and criticism.
French literature--To 1500--History and criticism.
Grail--Romances--History and criticism.
Tristan (Legendary character)--Romances--History and criticism.
Harvard subject headings:
Arthurian romances--History and criticism.
Grail--Legends--History and criticism
Tristan (Legendary character)--Romances--History and criticism.
Princeton subject headings:
Grail--Legends--History and criticism.
Tristan (Legendary character)--Romances--History and criticism.