Columbia subject headings:
German literature--18th century--History and criticism.
German literature--19th century--History and criticism.
Music and mythology.
Mythology, Germanic, in literature.
Opera--Germany--19th century.
Wagner, Richard, 1813-1883--Criticism and interpretation.
Harvard subject headings:
German literature--18th century--History and criticism
German literature--19th century--History and criticism
Music and mythology.
Mythology, Germanic, in literature.
Opera--Germany--19th century.
Wagner, Richard, 1813-1883--Criticism and interpretation.
Princeton subject headings:
Aesthetics, German.
Folklore--Germany.
Mythology, Germanic--Germany.