Columbia subject headings:
Authors, German--20th century--Biography.
Authors, German--Germany--Düsseldorf--20th century--Biography.
German literature--20th century--History and criticism.
Harvard subject headings:
Authors, German--20th century--Biography
Authors, German--Germany--Düsseldorf--20th century--Biography.
German literature--20th century--History and criticism
Princeton subject headings:
Authors, German--20th century--Biography.
Authors, German--Germany--Düsseldorf--20th century--Biography.
German literature--20th century--History and criticism.