Columbia subject headings:
Authors, German--20th century--Political and social views.
Authors, German--Germany--North Rhine-Westphalia--Political and social views.
German literature--20th century--History and criticism.
German literature--Germany--North Rhine-Westphalia--Themes, motives.
Germany (West)--Intellectual life--Sources.
North Rhine-Westphalia (Germany)--History--20th century--Chronology.
Politics and literature--Germany--North Rhine-Westphalia.
Westphalia (Germany)--In literature.
Harvard subject headings:
German literature--20th century--History and criticism
German literature--Germany--Westphalia--History and criticism.
Princeton subject headings:
Authors, German--Germany--Westphalia.
German literature--20th century--History and criticism.
German literature--Germany--Westphalia--History and criticism.