Columbia subject headings:
Harvard subject headings:
Academic theses
Arthurian romances
Hartmann, von Aue, active 12th century
Ulrich, von Zatzikhoven, active approximately 1200
Ulrich, von Zatzikoven, active approximately 1200.
Wirnt, von Grafenberg, active 13th century
Princeton subject headings:
German literature--Middle High German, 1050-1500.