Columbia subject headings:
Harvard subject headings:
Evolution in literature.
Evolution--History
German literature--18th century--Themes, motives.
German literature--19th century--Themes, motives.
Philosophy, German--18th century.
Philosophy, German--19th century.
Princeton subject headings:
Evolution in literature.
German literature--18th century--History and criticism.
German literature--19th century--History and criticism.