Columbia subject headings:
German literature--History and criticism.
Literature, Modern--History and criticism.
Harvard subject headings:
German literature--History and criticism
Literature, Modern--History and criticism
Princeton subject headings:
German literature--19th century--History and criticism.
German literature--20th century--History and criticism.
German poetry--19th century--History and criticism.
German poetry--20th century--History and criticism.
Literature--Philosophy.