Columbia subject headings:
Wolfram, von Eschenbach, active 12th century--Criticism, Textual.
Wolfram, von Eschenbach, active 12th century. Willehalm.
Harvard subject headings:
Wolfram, von Eschenbach, active 12th century--Criticism, Textual.
Wolfram, von Eschenbach, active 12th century. Willehalm.
Princeton subject headings: