Columbia subject headings:
Klage--Poetry.
Nibelungen--Poetry.
Nibelungenlied--Poetry.
Harvard subject headings:
Klage--Criticism, Textual.
Manuscripts, German (Middle High)--Germany--History.
Manuscripts, German (Middle High)--Poland--Kraków--History.
Nibelungen--Poetry.
Nibelungenlied--Criticism, Textual.
Princeton subject headings:
Klage--Poetry.
Nibelungen--Poetry.
Nibelungenlied--Poetry.