Columbia subject headings:
American literature--History and criticism.
Arthur, King.
Arthurian romances--History and criticism.
Comparative literature--Themes, motives.
English literature--History and criticism.
Galahad (Arthurian legendary character)
Galahad (Arthurian legendary character)--Romances--History and criticism.
Grail--Romances--History and criticism.
Grail.
Harvard subject headings:
American literature--History and criticism
Arthur, King.
Arthurian romances--History and criticism.
Comparative literature--Themes, motives.
English literature--History and criticism
Galahad (Arthurian legendary character)--Romances--History and criticism.
Grail
Grail--Legends--History and criticism
Princeton subject headings: