Columbia subject headings:
Harvard subject headings:
Epic poetry, German--History and criticism.
Manuscripts, German.
Nibelungenlied--Criticism, interpretation, etc.
Nibelungenlied--Influence.
Nibelungenlied--Sources.
Princeton subject headings:
Nibelungenlied--Criticism, interpretation, etc.
Nibelungenlied--Influence.
Nibelungenlied--Sources.