Columbia subject headings:
Iseult (Legendary character)
Tristan (Legendary character)
Harvard subject headings:
Arthurian romances--History and criticism.
Civilization, Medieval, in literature.
French poetry--To 1500--History and criticism
Iseult (Legendary character)--Romances--History and criticism.
Knights and knighthood in literature.
Mythology, Celtic, in literature.
Queens in literature
Tristan (Legendary character)--Romances--History and criticism.
Princeton subject headings: