Columbia subject headings:
Authors, Exiled.
Authors, German--19th century.
Authors, German--20th century.
German literature--Social aspects.
Harvard subject headings:
Authors, German--19th century.
Authors, German--20th century.
German literature--19th century--History and criticism
German literature--20th century--History and criticism
German literature--Social aspects.
Princeton subject headings:
Authors, Exiled.
Authors, German--19th century.
Authors, German--20th century.
German literature--Social aspects.