Columbia subject headings:
German literature--20th century.
German literature--Germany--Schleswig-Holstein--Bio-bibliography.
German literature--Germany--Schleswig-Holstein.
Harvard subject headings:
German literature--20th century
German literature--Germany--Schleswig-Holstein--Bio-bibliography.
German literature--Germany--Schleswig-Holstein.
Princeton subject headings:
Authors, German--20th century--Bio-bibliography.
German literature--20th century.
German literature--Germany (West)--Schleswig-Holstein--Bio-bibliography.
German literature--Germany (West)--Schleswig-Holstein.