Columbia subject headings:
Aesthetics, Modern--18th century.
Aesthetics, Modern--19th century.
German literature--18th century--History and criticism.
German literature--19th century--History and criticism.
Harvard subject headings:
Aesthetics, Modern--18th century.
Aesthetics, Modern--19th century.
Ambivalence in literature.
German literature--18th century--History and criticism
German literature--19th century--History and criticism
Princeton subject headings:
Aesthetics, German--18th century.
German literature--18th century--History and criticism.