Columbia subject headings:
Songs, German--History and criticism--Congresses.
Harvard subject headings:
Songs, German--History and criticism--Congresses.
Princeton subject headings:
German poetry--Middle High German, 1050-1500--History and criticism--Congresses.
Hymns, German--History and criticism--Congresses.
Minnesang--History and criticism--Congresses.
Songs, German--History and criticism--Congresses.