Columbia subject headings:
Authors, German--19th century--Political and social views.
Authors, German--20th century--Political and social views.
German literature--19th century--History and criticism.
German literature--20th century--History and criticism.
Germany--In literature.
Harvard subject headings:
Authors, German--19th century--Political and social views.
Authors, German--20th century--Political and social views
German literature--19th century--History and criticism
German literature--20th century--History and criticism
Germany--In literature.
Princeton subject headings:
German literature--19th century--History and criticism.
German literature--20th century--History and criticism.
Revolutionary literature, German--History and criticism.