Columbia subject headings:
Wolfram, von Eschenbach, active 12th century.
Wolfram, von Eschenbach, active 12th century. Parzival.
Harvard subject headings:
Perceval (Legendary character)--Romances.
Princeton subject headings:
Wolfram, von Eschenbach, 12th cent. Parzival.
Wolfram, von Eschenbach, active 12th century.