Columbia subject headings:
Harvard subject headings:
Arthurian romances--History and criticism.
Hartmann, von Aue, active 12th century--Influence.
Influence (Literary, artistic, etc.)
Knights and knighthood in literature.
Perceval (Legendary character)--Romances--History and criticism.
Wolfram, 12th cent. Parzival.
Wolfram, von Eschenbach, active 12th century. Parzival.
Princeton subject headings:
Hartmann, von Aue, active 12th century--Influence.
Wolfram, von Eschenbach, 12th cent. Parzival.